Plant sugars: Homeostasis and transport under abioticstress in plant

编号 040027802

推送时间 20210215

研究领域 森林培育 

年份 2021 

类型 期刊 

语种 英语

标题 Plant sugars: Homeostasis and transport under abioticstress in plant

来源期刊 Physiologia Plantarum

期 第278期

发表时间 20201116

关键词 Sugar transporters;  plant sugars;  sugar homeostasis;  abiotic stresses; 

摘要 The sessile nature of plants' life is endowed with a highly evolved defense system toadapt and survive under environmental extremes. To combat such stresses, plantshave developed complex and well-coordinated molecular and metabolic networksencompassing genes, metabolites, and acclimation responses. These modulategrowth, photosynthesis, osmotic maintenance, and carbohydrate homeostasis. Undera given stress condition, sugars act as key players in stress perception, signaling, andare a regulatory hub for stress-mediated gene expression ensuring responses ofosmotic adjustment, scavenging of reactive oxygen species, and maintaining the cel-lular energy status through carbon partitioning. Several sugar transporters are knownto regulate carbohydrate partitioning and key signal transduction steps involved inthe perception of biotic and abiotic stresses. Sugar transporters such as SUGARSWILL EVENTUALLY BE EXPORTED TRANSPORTER (SWEETs), SUCROSE TRANS-PORTERS (SUTs), and MONOSACCHARIDE TRANSPORTERS (MSTs) are involved insugar loading and unloading as well as long-distance transport (source to sink)besides orchestrating oxidative and osmotic stress tolerance. It is thus necessary tounderstand the structure–function relationship of these sugar transporters to fine-tune the abiotic stress-modulated responses. Advances in genomics have unraveledmany sugars signaling components playing a key role in cross-talk in abiotic stresspathways. An integrated omics approach may aid in the identification and characteri-zation of sugar transporters that could become targets for developing stress toler-ance plants to mitigate climate change effects and improve crop yield. In this review,we have presented an up-to-date analysis of the sugar homeostasis under abioticstresses as well as describe the structure and functions of sugar transporters underabiotic stresses.

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