A review of ascorbic acid potentialities against oxidative stress induced in plants
A review of ascorbic acid potentialities against oxidative stress induced in plants
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DOI：
10.2478/v10146-011-0011-x
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发表时间：
2011-01-01
期刊：
影响因子：
--
通讯作者：
Mohammad, Firoz
中科院分区：
文献类型：
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作者：
Khan, Taqi Ahmed;Mazid, Mohd;Mohammad, Firoz
抗坏血酸(AA)目前在植物生理学中占有重要地位，主要是因为它具有抗氧化剂和细胞还原剂等特性，在植物生长发育中发挥着不同的作用，并调节植物抵御环境胁迫的广泛细胞机制。一些研究人员认为，内源AA参与了一系列复杂而神秘的植物激素调节的信号网络，将不同的环境胁迫联系在一起，从而促进了植物的生长和发育。从目前的综述中可以明显看出，在植物耐受环境胁迫的AA潜力方面的最新进展是令人印象深刻的。事实上，AA在抵抗重金属、盐分、紫外线等氧化胁迫方面发挥着重要作用。迅速增加的证据表明，AA参与了几个生理过程，但关于AA减轻这些胁迫对植物的伤害的机制(S)，人们一直存在很大分歧。可能AA在调节对非生物胁迫(如紫外线、盐度和温度等)的耐受性中起作用。将在不久的将来引起更大的研究重点。此外，AA可能为提高作物产量提供一个适当的有吸引力的目标。
Ascorbic acid (AA) currently holds a significant position in plant physiology, mainly due to its possession of antioxidant and cellular reductant etc.properties and its diverse roles in plant growth and development and the regulation of a broad spectrum of plant cellular mechanisms against environmental stresses. Some researchers suggest that endogenous AA has been implicated in the promotion of plant growth and development by involvement in a complex and enigmatic array of phytohormone-regulated signalling networks that ties together different environmental stresses. As it is evident from the present review, recent progress on AA potentiality in the tolerance of plants to environmental stresses has been impressive. Indeed, AA plays an important role in resistance to oxidative stresses such as heavy metal, saline, ultra-violet etc. Rapidly increasing evidence indicates that AA is centrally involved in several physiological processes but there has been much disagreement regarding the mechanism(s) by which AA reduces the damaging effects of such stresses in plants. Perhaps the role of AA in mediating tolerance to abiotic stress (e.g. UV, salinity and temperature, etc.) will lead to a greater research focus in the near future. In addition, AA might provide a suitably attractive target for the enhancement of crop production.