Glycinebetaine: a versatile protectant to improve rice performance against aluminium stress by regulating aluminium uptake and translocation

Zhang Tianpeng; Zhang Wenxiu; Li DaxingZhou FengliChen XiaoLi ChongyangYu SangBrestic MarianLiu YangYang Xinghong

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Glycinebetaine: a versatile protectant to improve rice performance against aluminium stress by regulating aluminium uptake and translocation

机译：Glycinebetaine: a versatile protectant to improve rice performance against aluminium stress by regulating aluminium uptake and translocation

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Key message Glycinebetaine alleviates the detrimental effects of aluminium stress by regulating aluminium uptake and translocation, maintaining PSII activity, and activating the oxidative defence, thereby maintaining the growth and development of rice. Aluminium (Al) toxicity is one of the primary growth-limiting factors that limits plant growth and crop productivity in acidic soils. Rice (Oryza sativa L.) plants are susceptible to Al stress and do not naturally accumulate glycinebetaine (GB), one of the most effective protectants. Therefore, the objective of this study was to investigate whether exogenous GB can ameliorate the detrimental effects of Al stress on rice plants. Our results showed that the growth, development and biomass of rice were clearly inhibited under Al stress. However, exogenous GB application increased rice shoot growth and photosynthetic pigments contents, maintained photosystem II (PSII) activity, and activated the antioxidant defence system under Al stress. More importantly, GB may mediate the expression of Al uptake- and translocation-related genes, including OsALS1, OsNrat1, OsSTAR1 and OsSTAR2, and the galacturonic acid contents in rice roots under Al stress. Therefore, our findings highlight exogenous GB application is a valid approach to effectively combat Al toxicity by regulating physiological and biochemical processes in crops.

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来源
《Plant Cell Reports》 |2021年第12期|2397-2407|共11页
作者
Zhang Tianpeng; Zhang Wenxiu; Li DaxingZhou FengliChen XiaoLi ChongyangYu SangBrestic MarianLiu YangYang Xinghong;
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作者单位

Shandong Agr Univ, Coll Life Sci, State Key Lab Crop Biol, Shandong Key Lab Crop Biol, Tai An 271018, Shandong, Peoples R China;

Slovak Univ Agr, Dept Plant Physiol, A Hlinku 2, Nitra 94976, Slovakia;

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原文格式 PDF
正文语种英语
中图分类植物细胞学;
关键词
Glycinebetaine; Aluminium stress; Aluminium uptake and translocation; Oxidative defence; Rice;

Glycinebetaine: a versatile protectant to improve rice performance against aluminium stress by regulating aluminium uptake and translocation

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