Regulation of vegetative phase change in Arabidopsis thaliana by cyclophilin 40
Regulation of vegetative phase change in Arabidopsis thaliana by cyclophilin 40
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DOI：
10.1126/science.1057144
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发表时间：
2001-03-23
期刊：
影响因子：
56.9
通讯作者：
Poethig, RS
中科院分区：
文献类型：
--
作者：
Berardini, TZ;Bollman, K;Poethig, RS
在其发育过程中，植物芽从营养生长的幼年阶段进展到成年阶段，并从无生殖能力状态发展到有生殖能力状态。在拟南芥中，SQUINT (SQN) 的功能缺失突变减少了幼叶的数量，并对花序形态产生了微妙的影响，但对开花时间或繁殖能力没有影响。 SQN 编码拟南芥亲环蛋白 40 (CyP40) 同源物，这是一种与酵母、哺乳动物和植物中的 Hsp90 分子伴侣复合物相关的蛋白质。因此，在拟南芥中，CyP40是芽的营养成熟而非生殖成熟所特别需要的。
During its development, a plant shoot progresses from a juvenile to an adult phase of vegetative growth and from a reproductively incompetent to a reproductively competent state. In Arabidopsis, Loss-of-function mutations in SQUINT (SQN) reduced the number of juvenile Leaves and had subtle effects on inflorescence morphology but had no effect on flowering time or on reproductive competence. SQN encodes the Arabidopsis homolog of cyclophilin 40 (CyP40), a protein found in association with the Hsp90 chaperone complex in yeast, mammals, and plants. Thus, in Arabidopsis, CyP40 is specifically required for the vegetative but not the reproductive maturation of the shoot.