Structural variation at the maize WUSCHEL1 locus alters stem cell organization in inflorescences.
Structural variation at the maize WUSCHEL1 locus alters stem cell organization in inflorescences.
复制标题
玉米WUSCHEL1基因座的结构变异改变了花序中的干细胞组织。
DOI:
10.1038/s41467-021-22699-8
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发表时间:
2021-04-22
影响因子:
16.6
通讯作者:
Gallavotti A
中科院分区:
文献类型:
--
作者:
Chen Z;Li W;Gaines C;Buck A;Galli M;Gallavotti A
Structural variation in plant genomes is a significant driver of phenotypic variability in traits important for the domestication and productivity of crop species. Among these are traits that depend on functional meristems, populations of stem cells maintained by the CLAVATA-WUSCHEL (CLV-WUS) negative feedback-loop that controls the expression of the WUS homeobox transcription factor. WUS function and impact on maize development and yield remain largely unexplored. Here we show that the maize dominant Barren inflorescence3 (Bif3) mutant harbors a tandem duplicated copy of the ZmWUS1 gene, ZmWUS1-B, whose novel promoter enhances transcription in a ring-like pattern. Overexpression of ZmWUS1-B is due to multimerized binding sites for type-B RESPONSE REGULATORs (RRs), key transcription factors in cytokinin signaling. Hypersensitivity to cytokinin causes stem cell overproliferation and major rearrangements of Bif3 inflorescence meristems, leading to the formation of ball-shaped ears and severely affecting productivity. These findings establish ZmWUS1 as an essential meristem size regulator in maize and highlight the striking effect of cis-regulatory variation on a key developmental program. The WUSCHEL transcription factor promotes plant stem cell proliferation. Here the authors show that the maize Bif3 mutant contains a duplication of the ZmWUS1 locus leading to cytokinin hypersensitivity and overproliferation at the shoot meristem demonstrating the role of WUSCHEL in maize and how structural variation can impact plant morphology.
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DOI:
10.1093/bioinformatics/btu638
发表时间:
2015-01-15
期刊:
Bioinformatics (Oxford, England)
影响因子:
--
作者:
Anders S;Pyl PT;Huber W
通讯作者:
Huber W
影响因子:
14.8
作者:
Ishida, Yuji;Hiei, Yukoh;Komari, Toshihiko
通讯作者:
Komari, Toshihiko
影响因子:
7
作者:
Knauer, Steffen;Javelle, Marie;Timmermans, Marja C. P.
通讯作者:
Timmermans, Marja C. P.
影响因子:
11.6
作者:
Ikeda, Miho;Mitsuda, Nobutaka;Ohme-Takagi, Masaru
通讯作者:
Ohme-Takagi, Masaru
影响因子:
56.9
作者:
Bailey, JA;Gu, ZP;Eichler, EE
通讯作者:
Eichler, EE