Effect of drought on photosynthesis, total antioxidant capacity, bioactive component accumulation, and the transcriptome of Atractylodes lancea

BMC Plant Biology, Journal Year: 2021, Volume and Issue: 21(1)

Published: June 25, 2021

Abstract Background Atractylodes lancea (Thunb.) DC, a medicinal herb belonging to the Asteraceae family, often faces severe drought stress during its growth. Until now, there has been no research on effect of quality formation A. . Therefore, present study aimed effects through physical and chemical analysis, reveal related molecular mechanisms via transcriptome analysis. Results The photosynthesis was markedly inhibited under stress. There were alterations photosynthetic parameters (Pn, Gs, Ci) chlorophyll fluorescence (Fv/Fm, NPQ), content decreased. Twenty genes encoding important regulatory enzymes in light dark reactions, including Rubisco gene Calvin cycle, significantly downregulated. After exposure for more than 4 days, activities four antioxidative (SOD, POD CAT APX) began decrease continued with longer exposure. Meanwhile, most downregulated significantly. downregulation 21 respiratory electron transport chain indicated that blocked transfer accelerated excessive ROS MDA elevated. above data showed 15 days caused serious oxidative damage Drought not only reduced size dry weight , but also lowered amount total volatile oil main bioactive components. atractylodin decreased slightly, whereas atractylon β-eudesmol Moreover, ten sesquiterpene synthase mainly expressed rhizomes. Conclusions exposed stress, process assimilation affected by destruction photosynthesis; tolerance impaired because inhibition enzyme system; component biosynthesis hindered synthase-related expression. All these had negative impacts

Language: Английский

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Functions of Melatonin during Postharvest of Horticultural Crops

Plant and Cell Physiology, Journal Year: 2021, Volume and Issue: 63(12), P. 1764 - 1786

Published: Dec. 14, 2021

Melatonin, a tryptophan-derived molecule, is endogenously generated in animal, plant, fungal and prokaryotic cells. Given its antioxidant properties, it involved myriad of signaling functions associated with various aspects plant growth development. In higher plants, melatonin (Mel) interacts regulators such as phytohormones, well reactive oxygen nitrogen species including hydrogen peroxide (H2O2), nitric oxide (NO) sulfide (H2S). It shows great potential biotechnological tool to alleviate biotic abiotic stress, delay senescence conserve the sensory nutritional quality postharvest horticultural products which are considerable economic importance worldwide. This review provides comprehensive overview biochemistry Mel, whose endogenous induction exogenous application can play an important role enhancing marketability hence earnings from crops.

Language: Английский

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Targeting salt stress coping mechanisms for stress tolerance in Brassica: A research perspective

Plant Physiology and Biochemistry, Journal Year: 2020, Volume and Issue: 158, P. 53 - 64

Published: Nov. 27, 2020

Language: Английский

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Postharvest application of glycine betaine ameliorates chilling injury in cold-stored banana fruit by enhancing antioxidant system

Scientia Horticulturae, Journal Year: 2021, Volume and Issue: 287, P. 110264 - 110264

Published: May 23, 2021

Language: Английский

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Melatonin treatment delays senescence and improves antioxidant potential of sweet cherry fruits during cold storage

Scientia Horticulturae, Journal Year: 2021, Volume and Issue: 288, P. 110304 - 110304

Published: June 5, 2021

Language: Английский

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