首页|肌醇代谢在植物响应非生物胁迫中的作用

肌醇代谢在植物响应非生物胁迫中的作用

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非生物胁迫制约了植物的生长和发育,降低作物的产量,严重时导致植物死亡.为了应对非生物胁迫,植物在进化过程中形成了一系列胁迫响应机制,包括肌醇(MI,myo-inositol)代谢途径.肌醇为一类化学性质稳定的极性小分子,植物可通过积累其糖苷类衍生物参与渗透调节途径,从而响应非生物胁迫.肌醇-1-磷酸合酶(MIPS,myo-inositol-1-phosphate synthase)、肌醇单磷酸酶(IMP,inositol monophosphtease)和肌醇加氧酶(MIOX,myo-inositol oxygenase)在肌醇的生物合成或分解过程中发挥作用,它们通过调控植物中肌醇的含量,以及后续一系列复杂的转化途径,参与L-抗坏血酸(L-AsA,L-ascorbic acid)和部分细胞壁多糖的合成,响应盐、干旱、碱和低温等非生物胁迫.本文综述了肌醇的结构、生物学作用、肌醇代谢途径相关酶和肌醇衍生物在植物响应非生物胁迫中的研究进展,并对未来的研究方向进行了展望,旨在为利用肌醇代谢增强植物对非生物胁迫的抗性,培育抗逆植物品种提供理论基础.
The Role of Myo-inositol Metabolism in Plants Response to Abiotic Stress
Abiotic stress limits plant growth and development,causes yield losses in crops,and severe abiotic stress can even result in the death of plant.Plants have evolved a series of stress response mechanisms to adapt to abiotic stress,including the myo-inositol(MI)metabolic pathway.MI represents a class of small polar molecules with stable chemical properties.Plants can respond to a variety of abiotic stress by participating in osmoregulatory pathways through accumulating the glycoside derivatives of MI.Myo-inositol-1-phosphate synthase(MIPS),inositol monophosphate phosphatase(IMP),and myo-inositol oxygenase(MIOX)play a role in the process of the biosynthesis or decomposition of MI.They are involved in the synthesis of L-ascorbic acid(L-AsA)and cell wall polysaccharides by regulating the content of MI in plant and a series of subsequent complex transformation pathways,and ultimately response to abiotic stresses such as salt,drought,alkali,and low temperature.This paper reviewed the research progress of the structure,biological functions of MI,MI metabolic pathway-related enzymes and its derivatives in plants response to abiotic stresses,providing an outlook to the future research focuses.This study aims to provide a theoretical basis for enhancing plant resistance to abiotic stresses by utilizing MI metabolism and breeding stress-resistant plant varieties.

myo-inositol metabolismabiotic stressesmyo-inositol-1-phosphate synthaseinositol monophosphatasemyo-inositol oxygenase

于点、郭卫冷、丁炀、刘磊、郭睿、王丹、孙玉刚、郭长虹

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哈尔滨师范大学生命科学与技术学院/黑龙江省分子细胞遗传与遗传育种重点实验室,哈尔滨 150000

肌醇代谢 非生物胁迫 肌醇-1-磷酸合酶 肌醇单磷酸酶 肌醇加氧酶

国家自然科学基金国家自然科学基金国家科技攻关项目黑龙江省博士后基金哈尔滨师范大学研究生创新基金

U21A20182319725072022YFE0203300LBH-Z21172HSDSSCX2022-36

2024

10.13430/j.cnki.jpgr.20230717003

植物遗传资源学报
中国农业科学院作物科学研究所　中国农学会

植物遗传资源学报

CSTPCD北大核心
影响因子：1.415
ISSN：1672-1810
年,卷(期)：2024.25(2)
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