Pollen and the heat shock response
Pollen and the heat shock response
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DOI：
10.1007/bf02441959
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发表时间：
1996-11-01
影响因子：
--
通讯作者：
Crone, DF
中科院分区：
文献类型：
--
作者：
Mascarenhas, JP;Crone, DF
对热休克蛋白（hsp）基因在花粉发育和成熟雄配子体中的表达进行了综述。一般来说，成熟花粉缺乏正常的热休克反应。在一些物种的成熟花粉中，要么没有合成热休克蛋白来响应热胁迫，要么即使合成了，也只合成了一部分热休克蛋白，并且在转录和翻译水平上的响应都较弱，与营养组织的响应相比。然而，在花粉发育过程中，热休克蛋白的一个子集被诱导以响应热休克。此外，某些hsp基因或热休克同源（hsc）基因在没有热胁迫的正常花粉发育过程中被激活，表明这些基因可能具有重要的发育功能。讨论了热休克蛋白和hsc基因的独特激活模式与花粉对热胁迫的敏感性之间的关系。
The literature related to the expression of heat shock protein (hsp) genes in developing pollen and in the mature male gametophyte has been surveyed. In general, mature pollen lacks a normal heat shock response. In mature pollen of several species either no hsps are synthesized in response to heat stress or, if synthesized, only a subset are made and the response is weak at both the transcriptional and translational levels, compared to the response in vegetative tissues. In developing pollen, however, a subset of hsps is induced in response to heat shock. In addition, certain hsp genes or heat shock cognate (hsc) genes are activated during normal pollen development in the absence of heat stress, indicating that these genes are likely to have important developmental functions. How the distinctive activation pattern of hsp and hsc genes relates to the known sensitivity of pollen to heat stress is discussed.