Chilling Injury in Cotton {Gossypium hirsutum L.): Light Requirement for the Reduction of Injury and for the Protective Effect of Abscisic Acid
Chilling Injury in Cotton {Gossypium hirsutum L.): Light Requirement for the Reduction of Injury and for the Protective Effect of Abscisic Acid
复制标题
棉花 (Gossypium hirsutum L.) 的冷害：减少损伤和脱落酸保护作用的光照要求
DOI：
10.1093/oxfordjournals.pcp.a076187
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发表时间：
1981
影响因子：
4.9
通讯作者：
D. Atsmon
中科院分区：
文献类型：
--
作者：
A. Rikin;C. Gitler;D. Atsmon
Pretreatment by darkness increased chilling (4°C) injury in whole cotton (Gossypium hirsutumL.) seedlings and isolated cotyledonary tissue. Addition of sucrose in the dark period prevented the effect of darkness. Application of the photosynthetic inhibitor DCMU in light simulated the effect of darkness. ABA (10−5M) decreased chilling injury when applied in light as a pretreatment before the onset of chilling. The same pretreatment in darkness was almost ineffective, unless sucrose was added. ABA applied in light together with DCMU was ineffective in decreasing chilling injury. Lower light intensity resulted in increased chilling injury and a decreased effect of ABA in the prevention of chilling injury.The antimicrotubular drug colchicine increased the chilling injury. Pretreatment with ABA in light decreased the chilling and colchicine injury while the same pretreatment in darkness was ineffective.These results suggest that a deficiency of a photosynthetic product increases the chilling sensitivity of the tissue. ABA apparently increases chilling resistance through a metabolic process which depends on photosynthetic activity.
