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植物多样性（英文）
植物多样性（英文）

李德铢

双月刊

2096-2703

bianji@mail.kib.ac.cn

0871-65223032

650204

昆明市盘龙区蓝黑路132号中科院昆明植物研究所内

植物多样性（英文）/Journal Plant DiversityCSCD北大核心CSTPCDSCI
查看更多>>本刊是国家科委(79)国科发条字341号文批准创办的植物学专业学报，是中国科学院主管的全国性自然科学期刊。本刊1979年创刊，现已成为我国植物科学研究发表论文的主要学术性刊物之一。本刊属于中国生物学类科技核心期刊；中国自然科学核心期刊。主要刊登植物学各学科具有创新性或较高学术水平的原始论文和简报；植物学领域的新发现及重大应用价值的新成果快报；结合本人工作，反映本学科重要领域的国内外最新研究进展的综述等。本刊设有植物系统学与生物地理学、植物化学与化学生物学、生物多样性保护与民族植物学、植物生态学与资源管理、植物生理与分子生物学5个专栏。本刊已被国内外多家二次文献收录，现我刊已同30个国家和地区有发行和交换关系。
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    Stomatal dynamics are regulated by leaf hydraulic traits and guard cell anatomy in nine true mangrove species

    Ya-Dong QieQi-Wei ZhangScott A.M.McAdamKun-Fang Cao...
    395-405页
    查看更多>>摘要：Stomatal regulation is critical for mangroves to survive in the hyper-saline intertidal zone where water stress is severe and water availability is highly fluctuant.However,very little is known about the stomatal sensitivity to vapour pressure deficit(VPD)in mangroves,and its co-ordination with stomatal morphology and leaf hydraulic traits.We measured the stomatal response to a step increase in VPD in situ,stomatai anatomy,leaf hydraulic vulnerability and pressure-volume traits in nine true mangrove species of five families and collected the data of genome size.We aimed to answer two questions:(1)Does stomatal morphology influence stomatal dynamics in response to a high VPD in mangroves?with a consideration of possible influence of genome size on stomatal morphology;and(2)do leaf hydraulic traits influence stomatal sensitivity to VPD in mangroves?We found that the stomata of mangrove plants were highly sensitive to a step rise in VPD and the stomatal responses were directly affected by stomatal anatomy and hydraulic traits.Smaller,denser stomata was correlated with faster stomatal closure at high VPD across the species of Rhizophoraceae,and stomata size negatively and vein density positively correlated with genome size.Less negative leaf osmotic pressure at the full turgor(πo)was related to higher operating steady-state stomatal conductance(gs);and a higher leaf capacitance(Cleaf)and more embolism resistant leaf xylem were associated with slower stomatal responses to an increase in VPD.In addition,stomatal responsiveness to VPD was indirectly affected by leaf morphological traits,which were affected by site salinity and consequently leaf water status.Our results demonstrate that mangroves display a unique relationship between genome size,stomatal size and vein packing,and that stomatal responsiveness to VPD is regulated by leaf hydraulic traits and stomatal morphology.Our work provides a quantitative framework to better understand of stomatal regulation in mangroves in an environment with high salinity and dynamic water availability.
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    Hydraulic properties and drought response of a tropical bamboo(Cephalostachyum pergracile)

    Wanwalee KongjaratLu HanAmy Ny Aina AritsaraShu-Bin Zhang...
    406-415页
    查看更多>>摘要：Bamboo plants are an essential component of tropical ecosystems,yet their vulnerability to climate extremes,such as drought,is poorly understood due to limited knowledge of their hydraulic properties.Cephalostachyum pergracile,a commonly used tropical bamboo species,exhibited a substantially higher mortality rate than other co-occurring bamboos during a severe drought event in 2019,but the under-lying mechanisms remain unclear.This study investigated the leaf and stem hydraulic traits related to drought responses,including leaf-stem embolism resistance(P50leaf;P50stem)estimated using optical and X-ray microtomography methods,leaf pressure-volume and water-releasing curves.Additionally,we investigated the seasonal water potentials,native embolism level(PLC)and xylem water source using stable isotope.We found that C.pergracile exhibited strong resistance to embolism,showing low P50leaf,P50stem,and turgor loss point,despite its rapid leaf water loss.Interestingly,its leaves displayed greater resistance to embolism than its stem,suggesting a lack of effective hydraulic vulnerability segmentation(HVS)to protect the stem from excessive xylem tension.During the dry season,approximately 49％of the water was absorbed from the upper 20-cm-deep soil layer.Consequently,significant diurnal variation in leaf water potentials and an increase in midday PLC from 5.87±2.33％in the wet season to 12.87±4.09％in the dry season were observed.In summary,this study demonstrated that the rapid leaf water loss,high reliance on surface water,and a lack of effective HVS in C.pergracile accelerated water depletion and increased xylem embolism even in the typical dry season,which may explain its high mortality rate during extreme drought events in 2019.
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    BrrTCP4b interacts with BrrTTG1 to suppress the development of trichomes in Brassica rapa var.rapa

    Cheng LiLi ZhangHefan LiYuanwen Duan...
    416-420页
    查看更多>>摘要：The number of trichomes significantly increased in CRISPR/Cas9-edited BrrTCP4b turnip(Brassica rapa var.rapa)plants.However,the underlying molecular mechanism remains to be uncovered.In this study,we performed the Y2H screen using BrrTCP4b as the bait,which unveiled an interaction between BrrTCP4b and BrrTTG1,a pivotal WD40-repeat protein transcription factor in the MYB-bHLH-WD40(MBW)complex.This physical interaction was further validated through bimolecular luciferase complementa-tion and co-immunoprecipitation.Furthermore,it was found that the interaction between BrrTCP4b and BrrTTG1 could inhibit the activity of MBW complex,resulting in decreased expression of BrrGL2,a positive regulator of trichomes development.In contrast,AtTCP4 is known to regulate trichomes development by interacting with AtGL3 in Arabidopsis thaliana.Overall,this study revealed that BrrTCP4b is involved in trichome development by interacting with BrrTTG1 in turnip,indicating a divergence from the mechanisms observed in model plant A.thaliana.The findings contribute to our understanding of the regulatory mechanisms governing trichome development in the non-model plants turnip.
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    Molecular analyses display the increasing diversity of Podostemaceae in China

    Zhi-Zhong LiZhun XuShuang WuLang-Xing Yuan...
    421-424页
      原文链接:
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