首页|Mechanisms of branched chain amino acids promoting growth and lipid accumulation in Camelina sativa seedlings under drought and salt stress
Mechanisms of branched chain amino acids promoting growth and lipid accumulation in Camelina sativa seedlings under drought and salt stress
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NETL
NSTL
Elsevier
Drought and salt stress are important limiting factors affecting the growth of crop seedlings. In this study, the oilcrop C. sativa was selected as the experimental material. This study investigated the effects of BCAAs (branchedchain amino acids, including Leu, Ile, and Val) on plant growth, lipid content, antioxidant enzymes, intracellularsubstances, and photosynthetic activity of C. sativa. BCAAs at 100 μM concentration, were foliar sprayed separately,along with an equal amount of water, under normal, PEG (0.20 g mL~(-1)), and NaCl (150 mM) conditions.The results illustrated that both PEG and NaCl markedly reduced the total lipid and soluble protein contents,inhibiting the growth of C. sativa seedlings significantly, including a decrease in height, biomass, and chlorophylls.BCAAs supplementation effectively mitigated the detrimental effects of drought and salt. Foliar sprayingBCAAs mainly worked by increasing soluble sugars and proteins, enhancing enzymatic activities of antioxidantenzymes, improving photosynthesis parameters (Fv/Fm and Y(Ⅱ)), thereby promoted lipid accumulation andseedlings growth of C. sativa, with Val showing the best performance. The current study would provide thetheoretical basis and technical support for enhancing lipid production and promoting seedling growth of C. sativato abiotic stress by applying exogenous BCAAs.
Camelina sativa seedlingsBranched chain amino acidsBiofuelLipid accumulationDrought and salt stress
NETL
NSTL
Elsevier
