Pleiotropic Effects of sym-17 : A Mutation in Pisum sativum L. cv Sparkle Causes Decreased Nodulation, Altered Root and Shoot Growth, and Increased Ethylene Production.
Pleiotropic Effects of sym-17 : A Mutation in Pisum sativum L. cv Sparkle Causes Decreased Nodulation, Altered Root and Shoot Growth, and Increased Ethylene Production.
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sym-17 的多效性效应：豌豆 L. cv Sparkle 的突变导致结瘤减少、根和芽生长改变以及乙烯产量增加。
DOI：
10.1104/pp.100.3.1326
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发表时间：
1992
期刊：
影响因子：
7.4
通讯作者：
T. Larue
中科院分区：
文献类型：
--
作者：
K. Lee;T. Larue
R82（sym-17）是豌豆（PisumsativumL.）cv Sparkle，进行了描述。在光照和黑暗条件下，突变体的新梢生长量均低于亲本。赤霉素处理不能使R82的芽生长正常化。变异株的根粗而短。它形成的根瘤很少，但比固氮酶活性不受影响。R82比Sparkle产生更多的乙烯。它还含有更多的游离1-氨基-环丙烷-1-羧酸比它的父母在地上部和根。R82的根尖乙烯形成酶活性低于Sparkle，而R82的整个地上部乙烯形成酶活性与Sparkle相近。R82对外源乙烯的敏感性不如Sparkle。外源乙烯处理没有使火花模仿R82，乙烯生物合成或行动的抑制剂没有正常化的R82的表型。数据表明，sym-17的主要作用不是增强乙烯产生。
R82 (sym-17), a stable mutant of Pisum sativum L. cv Sparkle, is described. The shoot growth of the mutant was less than that of its parent under light or dark growth conditions. Gibberellic acid treatment did not normalize the shoot growth of R82. The mutant had thick and short roots. It formed few nodules, but the specific nitrogenase activity was not affected. R82 produced and contained more ethylene than Sparkle. It also contained more free 1-amino-cyclopropane-1-carboxylic acid than did its parent in both the shoot and the root. The root tip of R82 had a lower activity of ethylene-forming enzyme than that of Sparkle, whereas the whole shoot of R82 had a similar activity. The sensitivity of R82 to exogenous ethylene was not more than that of Sparkle. Exogenous ethylene treatments did not make Sparkle mimic R82, and inhibitors of ethylene biosynthesis or action did not normalize the phenotype of R82. The data suggest that the primary effect of sym-17 is not the enhanced ethylene production.