The Arabidopsis mutant, fy-1, has an ABA-insensitive germination phenotype.
The Arabidopsis mutant, fy-1, has an ABA-insensitive germination phenotype.
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DOI：
10.1093/jxb/err452
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发表时间：
2012-04
影响因子：
6.9
通讯作者：
Hill RD
中科院分区：
文献类型：
--
作者：
Jiang S;Kumar S;Eu YJ;Jami SK;Stasolla C;Hill RD
拟南芥FY是酵母RNA 3'加工因子Pfs 2 p的同源物，通过与RNA结合蛋白FCA的相互作用调控植物自主的成花转变途径。这表明，FY也影响种子休眠。拟南芥fy-1突变体的新鲜收获的种子在没有层积或后熟的情况下容易发芽。此外，在相同条件下，与野生型Ler相比，fy-1突变体表现出较低的阿坝敏感性。新鲜收获的种子的fy-1有显着较高的阿坝水平比勒，即使勒是休眠和fy-1发芽容易。FY的PPLPP结构域，这是开花控制所需的，是不是必需的ABA影响抑制发芽。FLC在不同基因型种子中的表达分析表明，FY对休眠的影响可能不是通过FLC引起的。在新鲜收获的Ler和吸收48 h的fy-1之间未观察到CYP 707 A1、CYP 707 A2、NCED 9、ABI 3和ABI 4的显著差异。GA 3 ox 1和GA 3 ox 2迅速增加超过48小时的吸胀期为fy-1，没有显着增加，这些成绩单为Ler。ABI 5水平在48小时吸胀期间在fy-1中显著较低。结果表明，FY参与了拟南芥种子休眠和阿坝敏感性的形成。
Arabidopsis FY, a homologue of the yeast RNA 3' processing factor Pfs2p, regulates the autonomous floral transition pathway through its interaction with FCA, an RNA binding protein. It is demonstrated here that FY also influences seed dormancy. Freshly-harvested seed of the Arabidopsis fy-1 mutant germinated readily in the absence of stratification or after-ripening. Furthermore, the fy-1 mutant showed less ABA sensitivity compared with the wild type, Ler, under identical conditions. Freshly-harvested seed of fy-1 had significantly higher ABA levels than Ler, even though Ler was dormant and fy-1 germinated readily. The PPLPP domains of FY, which are required for flowering control, were not essential for the ABA-influenced repression of germination. FLC expression analysis in seeds of different genotypes suggested that the effect of FY on dormancy may not be elicited through FLC. No significant differences in CYP707A1, CYP707A2, NCED9, ABI3, and ABI4 were observed between freshly-harvested Ler and fy-1 imbibed for 48 h. GA3ox1 and GA3ox2 rapidly increased over the 48 h imbibition period for fy-1, with no significant increases in these transcripts for Ler. ABI5 levels were significantly lower in fy-1 over the 48 h imbibition period. The results suggest that FY is involved in the development of dormancy and ABA sensitivity in Arabidopsis seed.
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影响因子：
4.8
作者：
Gampala, SSL;Finkelstein, RR;Rock, CD
通讯作者：
Rock, CD
影响因子：
7.4
作者：
Debeaujon, I;Koornneef, M
通讯作者：
Koornneef, M
影响因子：
11.4
作者：
Kushiro, T;Okamoto, M;Nambara, E
通讯作者：
Nambara, E
DOI：
10.1073/pnas.081594298
发表时间：
2001-04-10
影响因子：
11.1
作者：
Lopez-Molina, L;Mongrand, S;Chua, NH
通讯作者：
Chua, NH
影响因子：
7.4
作者：
Okamoto, M;Kuwahara, A;Nambara, E
通讯作者：
Nambara, E