Arabidopsis HD-Zip II proteins regulate the exit from proliferation during leaf development in canopy shade.
Arabidopsis HD-Zip II proteins regulate the exit from proliferation during leaf development in canopy shade.
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DOI：
10.1093/jxb/ery331
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发表时间：
2018-11-26
影响因子：
6.9
通讯作者：
Ruberti I
中科院分区：
文献类型：
--
作者：
Carabelli M;Possenti M;Sessa G;Ruzza V;Morelli G;Ruberti I
延长的阴影决定早期退出增殖拟南芥叶片通过协同作用的ATHB 2和ATHB 4 HD-Zip II蛋白。避荫反应主要表现为以叶和根扩展为代价增加植物伸长。尽管在理解遮荫诱导下胚轴伸长的机制方面取得了进展，但对下胚轴以外的器官对模拟遮荫的反应知之甚少。在拟南芥中，有证据表明，阴影迅速和短暂地降低了年轻的第一和第二叶原基的细胞分裂频率通过非细胞自主机制。然而，树冠遮荫对叶片发育的影响可能是复杂的，需要进一步研究。利用遗传学、细胞生物学和分子生物学相结合的方法，我们揭示了长时间的冠层遮荫对叶片发育的影响。我们表明，持续的阴影决定早期退出增殖的第一和第二叶拟南芥。此外，我们表明，在模拟阴影下的第一和第二叶增殖的早期退出至少部分取决于同源结构域亮氨酸拉链II（HD-Zip II）转录因子拟南芥HOMEOBOX 2（ATHB 2）和ATHB 4的作用。最后，我们提供了ATHB 2和ATHB 4蛋白协同工作的证据。这些数据为研究遮荫条件下叶片发育的调控机制提供了新的思路。
Prolonged shade determines early exit from proliferation in the Arabidopsis leaf through the concerted action of ATHB2 and ATHB4 HD-Zip II proteins. The shade avoidance response is mainly evident as increased plant elongation at the expense of leaf and root expansion. Despite the advances in understanding the mechanisms underlying shade-induced hypocotyl elongation, little is known about the responses to simulated shade in organs other than the hypocotyl. In Arabidopsis, there is evidence that shade rapidly and transiently reduces the frequency of cell division in young first and second leaf primordia through a non-cell-autonomous mechanism. However, the effects of canopy shade on leaf development are likely to be complex and need to be further investigated. Using combined methods of genetics, cell biology, and molecular biology, we uncovered an effect of prolonged canopy shade on leaf development. We show that persistent shade determines early exit from proliferation in the first and second leaves of Arabidopsis. Furthermore, we demonstrate that the early exit from proliferation in the first and second leaves under simulated shade depends at least in part on the action of the Homeodomain-leucine zipper II (HD-Zip II) transcription factors ARABIDOPSIS THALIANA HOMEOBOX2 (ATHB2) and ATHB4. Finally, we provide evidence that the ATHB2 and ATHB4 proteins work in concert. Together the data contribute new insights on the mechanisms controlling leaf development under canopy shade.
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影响因子：
10.5
作者：
Carabelli, Monica;Possenti, Marco;Ruberti, Ida
通讯作者：
Ruberti, Ida
影响因子：
7.2
作者：
Colón-Carmona, A;You, R;Doerner, P
通讯作者：
Doerner, P
影响因子：
7.2
作者：
Galstyan, Anahit;Cifuentes-Esquivel, Nicolas;Martinez-Garcia, Jaime F.
通讯作者：
Martinez-Garcia, Jaime F.
DOI：
10.1073/pnas.93.8.3530
发表时间：
1996-04-16
影响因子：
11.1
作者：
Carabelli, M;Morelli, G;Ruberti, I
通讯作者：
Ruberti, I
影响因子：
4.3
作者：
Holst, Kerstin;Schmuelling, Thomas;Werner, Tomas
通讯作者：
Werner, Tomas