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Industrial Crops and Products
Elsevier Science Publishers
Industrial Crops and Products

Elsevier Science Publishers

0926-6690

Industrial Crops and Products/Journal Industrial Crops and ProductsSCIISTPEI
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    Plastome sequencing for accurate and effective authentication of Polygonatum kingianum (Asparagaceae)

    Guo X.Zhang G.Shi N.Xie P....
    12页
    查看更多>>摘要：? 2022 Elsevier B.V.Polygonatum kingianum (Asparagaceae) is a traditional Chinese medicinal plant commercially valued by the pharmaceutical industry and rural development. The taxonomic delimitation of the species remains ambiguous. Due to previous poorly delineated species boundary, P. hunanense (syn. P. kingianum var. grandifolium) has been mistaken for P. kingianum in herbal cultivation, products sale, and drug production. In this study, we aimed to clarify the taxonomic confusion in the species boundary of P. kingianum, and to develop an accurate and efficient authentication tool to monitor the trade of P. kingianum related plant products. Based on dense intraspecific plastome sequencing and phylogenetic analyses, our data confirm that all the synonymized taxa, except for P. kingianum var. grandifolium (= P. hunnanense), really belong to P. kingianum. On this basis, a molecular authentication system, which uses complete plastomes as molecular tags, is developed for authentication of P. kingianum related products. To validate its efficacy, we experimentally applied the system to authenticate commercial seedlings and processed rhizomes marketed as P. kingianum. The high performance of the authentication system indicates that the plastome super-barcoding approach can be used as an effective tool for authentication of P. kingianum related plant products. The findings can be useful for guaranteeing the quality, safety, and effectiveness of P. kingianum, and thus have great significance for herbal cultivation and drug production.
      原文链接:
    • NSTL
    • Elsevier

    Seasonality impact on the anti-inflammatory, antiproliferative potential and the lignan composition of Bursera microphylla

    Torres-Moreno H.Lopez-Romero J.C.Velarde-Rodriguez G.M.Vidal-Gutierrez M....
    11页
    查看更多>>摘要：? 2022 Elsevier B.V.Bursera microphylla A. Gray (Burseraceae) is a native plant of the Sonoran Desert, used in traditional medicine against different illnesses. The biological potential of B. microphylla has been associated with some groups of bioactive metabolites; amongst the most interesting for its biological effect are the lignan-type compounds. To date, the biological potential of fruits, leaves and stems of B. microphylla has not been widely explored; additionally, it is unknown if the seasons of the year modulate their biological activities and the profile of bioactive compounds. The objective of the present research was to determine the seasonality effect on the anti-inflammatory, antiproliferative potential and the lignan composition of B. microphylla. Ethanolic extracts of stems, leaves and fruits collected during spring, summer, autumn and winter (2019–2020) were obtained. The antiproliferative activity was evaluated against the cell lines C-33 A, HeLa, A549 and ARPE-19 by MTT assay. The anti-inflammatory effect was determined in RAW 264.7-activated with LPS through the quantification of nitric oxide (NO) using the Griess method. The profile of bioactive compounds was investigated by ESI-IT-MSn analysis. Fruits extracts exhibited the highest potential to inhibit the NO production, followed by the stems and leaves extracts. In the same way, fruits extracts displayed the highest antiproliferative activity followed by the stems and leaves extracts. C-33 A was the most sensitive to the treatments, followed by HeLa, A549 and ARPE-19. The chemical analysis allowed the identification of 5 new lignan-type compounds in the extract (hinokinin, 3,4-dimethoxy-3′,4′-methylenedioxylignano-9,9′-epoxylignan- 9′-ol, 7′,8′-dehydropodophyllotoxin, β-peltatin A-methyl ether and 7′, 8′-dehydroacetylpodophyllotoxin). The results show that seasonality modulates the anti-inflammatory, the antiproliferative potential, and the chemical composition of the extracts. The above suggests that B. microphylla could represent a potential source of phytochemicals for the development of pharmacological therapies for inflammation and cancer.
      原文链接:
    • NSTL
    • Elsevier

    Chitosan-cellulose nanoencapsulation systems for enhancing the insecticidal activity of citronella essential oil against the cotton leafworm Spodoptera littoralis

    Ibrahim S.S.Elbehery H.H.Abou-Elseoud W.S.Hassan M.L....
    15页
    查看更多>>摘要：? 2022Essential oils of plant origin could provide green and effective alternative to synthetic insecticides. To avoid the instability and high volatility of essential oils, it is necessary to introduce new techniques to protect their bioactive constituents. In the current study, nanoencapsulation systems from chitosan nanoparticles (CSNPs) and cellulose nanofibers (CNF) were used to control the release of citronella essential oil (CEO) for use against cotton leafworm, Spodoptera littoralis (Boisd.). The size, entrapment efficiency, and kinetic of CEO release from CSNPs and CSNPs/CNF nano-systems were studied. The size of CSNPs was increased from 102.1 ± 0.55 nm to 171.9 ± 2.4 nm and 426.9 ± 4.38 nm due to addition of CEO and CEO/CNF, respectively, whereas the encapsulation efficiency of CEO was 61.8 ± 1% and 90.8 ± 1% for CSNPs and CSNPs/CNF systems, respectively. CEO release after two weeks was 100% and 74% from the CSNPs and CSNPs/CNF nano-systems, respectively, while the release of the control sample (non-encapsulated CEO) was 100% after only 6 h. Experiments on insecticidal activity revealed that all nano-formulations disrupted the development of S. littoralis. CEO-CSNPs/CNF was the most effective system; it significantly prolonged the larval and pupal durations compared to control group. A significant reduction in pupal weight, adult longevity, and female fecundity was observed particularly after CEO-CSNPs/CNF and CEO-CSNPs treatments. The semi-field experiment revealed that CSNPs/CNF had the greatest persistence effect, resulting in the highest larval mortality across all tested intervals, followed by CEO-CSNPs and CEO-NE. CSNPs and CEO, on the other hand, demonstrated little or no persistence effects. The observed results revealed that CSNPs and CNF could improve the insecticidal effect of CEO as bio-insecticide against S. littoralis larvae.
      原文链接:
    • NSTL
    • Elsevier

    Is it necessary to apply chemical weed control in short-rotation poplar plantations on deep soil sites?

    Fu J.Zou S.Wang A.Zhang P....
    12页
    查看更多>>摘要：? 2022 Elsevier B.V.Chemical weed control has been widely applied in plantation forests around the world. However, understanding the long-term influence of weed control on stand growth and its underlying mechanisms is still limited. We conducted a six-year (2016–2021; an entire rotation) weed control study in Chinese white poplar (Populus tomentosa Carr.) plantations established using tall planting stock on a deep soil site, which is a typical afforestation mode for poplars in north China. Three treatments of chemical weed control degree were implemented: no weeding (W0), removing weeds within 50 cm distance from the tree row (W50) and removing all weeds on the ground (W150). Different tree growth indicators, soil water content (θ), tree root distribution, and soil physical properties were measured. There was no weed control degree effect on θ in 2017 (P = 0.4408) but significant θ difference (P = 0.0140) among treatments existed in 0–30 cm soil in 2021. Different degrees of weed control did not change soil physical properties (P > 0.05) after the long-term application of chemical weeding. There were no differences (P > 0.05) in all growth indicators. But the cumulative increments of tree diameter, height, stand volume index, and biomass at the end of the rotation in W150 were numerically 2–27% lower than W0 and 11–26% lower than W50. The total fine roots biomass increased with decreasing weed control degree, although the difference was non-significant (P > 0.05). The fine root distribution pattern indicated that there might be many fine roots below 200 cm depth. The tree growth response to weed control may be attributed to tall planting stock that avoids light competition from weeds and deep soil resource exploration by tree roots that alleviate competition by shallow weed roots. Consequently, it may be unnecessary to apply chemical weed control in poplar plantations established using tall planting stock on deep soil sites. Our findings provide guidance for the sustainable management of industrial plantation forests.
      原文链接:
    • NSTL
    • Elsevier

    Impact of summer heat stress inducing physiological and biochemical responses in herbaceous peony cultivars (Paeonia lactiflora Pall.) from different latitudes

    Zhang D.Zhang J.Xia Y.Shi X....
    14页
    查看更多>>摘要：? 2022 Elsevier B.V.As global temperatures continue to rise, heat stress and its severity are projected to advance as a major abiotic stress, seriously limiting the growth and production of herbaceous peony (Paeonia lactiflora Pall.), especially in low-latitude areas. Therefore, determining the ravaging effects of heat stress on the growth and development of herbaceous peony has become a prerequisite for expanding the cultivation area of this world-renowned ornamental crop. Comprehensive research on physiological and biochemical responses to summer heat stress was conducted between low-latitude and midlatitude herbaceous peony cultivars at low latitudes. Field observations showed that the stay-green (SG) duration varied among the cultivars from different latitudes and had a direct correlation with the level of heat damage. As the heat stress intensified, chlorophyll (Chl) contents and Chl fluorescence were decreased in the six cultivars. On the contrary, the relative electrical conductivity (REC) increased sharply, with the low-latitude ‘Hang Baishao’ presenting the lowest REC among the six cultivars before August 15 (with the highest temperatures). Photosynthetic curves showed more sustained photosynthesis in ‘Hang Baishao’, ‘Meiju’ and ‘Bo Baishao’. Based on principal component analysis (PCA) and subordinate function value analysis, ‘Hang Baishao’ was deduced as the most heat-tolerant cultivar, whereas ‘Zhuguang’ as a most heat-sensitive cultivar out of the six cultivars. The oxidative stress analysis between the two cultivars indicated an over-accumulation of reactive oxygen species (ROS) and malondialdehyde (MDA) with lower antioxidant enzyme activity in ‘Zhuguang’ than ‘Hang Baishao’. The results imply that heat-tolerant ‘Hang Baisao’ exhibited minimal heat damage and a delayed SG duration based on its enhanced antioxidant enzyme activity and heat acclimation under high-temperature stress. This study could provide insights into the responses and adaptions of peonies to heat stress and aid in the breeding of excellent peonies with improved heat resistance under ever-changing climatic conditions.
      原文链接:
    • NSTL
    • Elsevier

    Metabolic gene expression and centelloside production in elicited Centella asiatica hairy root cultures

    Alcalde M.A.Cusido R.M.Palazon J.Bonfill M....
    7页
    查看更多>>摘要：? 2022The most economically important centellosides, madecassoside and asiaticoside, are produced in very low amounts in Centella asiatica (L.) Urban roots. With the aim of overcoming this limitation, in this work we compared the effect of different elicitors on centelloside production in hairy root cultures established by Agrobacterium rhizogenes infection. Additionally, elicitor-induced changes in the expression of key biosynthetic genes were studied to shed light on the regulation of the triterpene metabolic pathway. The elicitors tested were coronatine and methyl jasmonate, added separately or together, and salicylic acid. The content of the four main centellosides (asiaticoside, madecassoside, asiatic acid and madecassic acid) was determined by HPLC/DAD, and the expression level of genes after elicitation was analyzed by real-time quantitative polymerase chain reaction. The greatest increase in the production of centellosides, especially madecassoside, was achieved with coronatine, applied alone or with methyl jasmonate. This treatment also enhanced the expression of the target genes, particularly at the start of elicitation. By far the most highly expressed were those involved in oxidations, indicating that the tested elicitors did not act specifically on key genes in the centelloside biosynthetic pathway. These results support that hairy roots are a promising biotechnological platform for improved centelloside production and that this approach warrants further research.
      原文链接:
    • NSTL
    • Elsevier

    Irrigation and fertilization modulate guayulin content in guayule (Parthenium argentatum A. Gray) and its hybrids

    Garcia-Martinez M.M.Zalacain A.Jara F.M.Lopez-Corcoles H....
    6页
    查看更多>>摘要：? 2022 The AuthorsThe guayulin content of guayule (Parthenium argentatum Gray) is subject to seasonal variation and follows specific patterns that are dependent on the accession and the organ (stems or leaves). However, little is known about guayulin in response to agronomic management such as irrigation or fertilization. A 24-month experiment was performed to investigate the accumulation of guayulin in one guayule accession (R-1040) and two hybrids (CAL-1 and AZ-2), in relation to crop system (irrigated or non-irrigated) and the nitrogen fertilizer units (NFU 0% or 100%). Irrigation increased biomass, which likely diluted guayulin concentration, but contributed to increase guayulins yield in both organs (stems and leaves). Fertilization had no effect on guayulin and resin production, but it increased the number of stems and total biomass. The pattern of accumulation of guayulins between stems and leaves was different. Differences were observed between the hybrids and the pure accession R1040, which was smaller in size but produced more guayulins. A strong relationship was found between guayulin yield and the production of rubber.
      原文链接:
    • NSTL
    • Elsevier

    Lightning impulse breakdown performance of saturated vs unsaturated vegetable oil and their mixtures with mineral oil

    Shill D.C.Das A.K.Chatterjee S.
    14页
    查看更多>>摘要：? 2022 Elsevier B.V.This paper presents the results of the experimental studies on lightning impulse breakdown tests of two categories of vegetable oil – saturated versus unsaturated. The saturated vegetable oils comprise refined, bleached, and deodorized coconut oil and virgin coconut oil (i.e., RBDCO and VCO), while the unsaturated vegetable oil is the most commonly used soybean oil called ‘MIDEL eN1215′. The differences in the impulse breakdown performance of the two categories of vegetable oil were analyzed from the perspective of molecular ionization and ionization potential. The effect of the residual mineral oil on impulse breakdown performance was also studied and analyzed. A point-sphere electrode system was used in this study. It is observed that at a 12.5 mm gap, the lightning impulse breakdown voltage (LIBDV) of both RBDCO and VCO were nearly similar to natural ester oil (NEO) subjected to positive excitation, but with negative excitation, the latter appears to be inferior. At twice the electrode gap, LIBDV can easily differentiate between unsaturated and saturated vegetable oils, whatever be the polarity of excitation. With mineral oil, up to 20%, LIBDVs of vegetable oil tend to increase. This is mainly important with positive excitation, especially in NEO, where up to a 25% increase was observed as against pure oil.
      原文链接:
    • NSTL
    • Elsevier

    Pectin-associated mannans and xylans play distinct roles in cell-cell adhesion in pine and poplar wood

    Liu D.Yang H.Carpita N.C.McCann M.C....
    10页
    查看更多>>摘要：? 2022 Elsevier B.V.Wood particles of pine required longer treatments of acidic chlorite and dilute alkali to achieve similar proportions of cell separation as of poplar. Chemical extraction and enzymatic digestion studies indicated that rhamnogalacturonan-I (RG-I), mannan and xylan contribute to cell-cell adhesion in pine wood. Mannan associated with lignin in an acidic chlorite fraction and with xylan in a dilute alkali fraction. RG-I and xylan were extracted in both chlorite and dilute alkali in poplar. Scanning electron microscopy and a probe diffusion study using Fluorescence Recovery After Photobleaching showed that lignin, RG-I and mannan initiated cell separation at cell corners and dilute alkali extraction of xylan was required for complete cell separation in pine. Cell-cell separation increased enzymatic saccharification within 24 h by 2-fold in poplar and 3.4-fold in pine. Our results inform a strategy to reduce particle size in woody biomass and provide insights into different molecular bases of cell-cell adhesion.
      原文链接:
    • NSTL
    • Elsevier

    Optimization of lignin extraction by response surface methodology from sugarcane bagasse using deep eutectic solvents (DES)

    Varilla-Mazaba A.Raggazo-Sanchez J.A.Calderon-Santoyo M.Gomez-Rodriguez J....
    11页
    查看更多>>摘要：? 2022 Elsevier B.V.Lignin removal in lignocellulosic biomass is an important step to obtain efficient fermentable sugars production during enzymatic hydrolysis. Likewise, interest has emerged in the past few years for the application of eco-friendly technology for biomass delignification. Thus, the use of deep eutectic solvents has been considered as an alternative to treat lignocellulosic biomass. The main objective of this work was to optimize the sugarcane bagasse delignification using deep eutectic solvents (DES): ChCl-Gly and ChCl-Urea. Previously, the effect of temperature (80–120 °C) and reaction time (2–6 h) were evaluated. Then, response surface methodology was used to optimize the conditions of reaction time, liquid-solid ratio (LSR), and temperature. The results found in this investigation showed that the increase of the reaction time and temperature improve the lignin removal. The optimization revealed that under optimal conditions it is possible to remove an 81.1% (13.12 h, LSR 23.4:1 and 160 °C) and 82% (14.04 h, LSR 17:1 y 160 °C) of the lignin in the sugarcane bagasse using ChCl-Gly and ChCl-Urea, respectively. Also, it is possible to convert 50–80% of the cellulose in sugarcane bagasse after the treatment with DES. This demonstrates that the use of DES is efficient and useful to remove the lignin from lignocellulosic biomass.
      原文链接:
    • NSTL
    • Elsevier