BRASSINOSTEROIDS: UNDER BIOTIC STRESS
BRASSINOSTEROIDS: UNDER BIOTIC STRESS
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DOI：
10.1007/978-94-007-0189-2_12
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发表时间：
2011-01-01
期刊：
影响因子：
--
通讯作者：
Ahmad, Aqil
中科院分区：
文献类型：
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作者：
Hayat, Shamsul;Irfan, Mohammad;Ahmad, Aqil
油菜素内酯是一种甾体植物激素，是代谢活跃组织中生长和代谢的关键调节剂。它们的相互作用保证了分生组织的加速生长或分化，或诱导生物挑战组织的防御反应，以浓度依赖的方式停止生长反应。高活性生长调节剂和经典植物激素的基本原理，基于外部线索和内源发育程序，为整个植物确定局部组织的命运，可能诱导基于超敏反应的PCD，激活LAR和/或SAR。在几种拟南芥和其他BR突变体中，生长代谢向防御策略的转变证明了它们的拮抗作用。然而，BRs与其他已知的植物激素在生物胁迫下抑制生长反应的特定相互作用，已经在本调查中被试图强调。
Brassinosteroids are the steroidal plant hormones, key regulators of growth and metabolism in metabolically active tissues. Their interplay ensures either the accelerated growth or differentiation in meristematic tissues or induces the defense responses in biotically challenged tissues, stopping the growth responses in concentration dependent manner. A rationale of highly active growth regulators and classical phytohormones, based on external cues and endogenous developmental program, ascertains the fate of localized tissue for the sake of whole plant, may induce hypersensitive response based PCD, activating LAR and/or SAR. A shift of growth metabolism towards defense strategies is evidenced in several Arabidopsis and other BR mutants suggesting their antagonistic role. However, specific interaction of BRs with well known other phytohormones in suppressing the growth responses under biotic stress, have been tried to underline in the present survey.