Distinct sensitivities to phosphate deprivation suggest that RGF peptides play disparate roles in Arabidopsis thaliana root development.
Distinct sensitivities to phosphate deprivation suggest that RGF peptides play disparate roles in Arabidopsis thaliana root development.
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DOI：
10.1111/nph.13405
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发表时间：
2015-08
期刊：
影响因子：
--
通讯作者：
Benfey PN
中科院分区：
文献类型：
--
作者：
Cederholm HM;Benfey PN
日益增长的农业需求，在即将面临的磷（Pi）短缺强调需要更好地了解植物生长条件下的Pi剥夺。Pi是一种必需的营养素，是肥料的主要成分。植物已经进化出策略，通过在短缺条件下改变根系发育来改善这种营养素的获取。我们表明，信号肽被认为是冗余的拟南芥发展中有不同的功能，在响应Pi剥夺。使用显微镜和共聚焦成像，根的生长速度和细胞组成进行了分析。使用表达微阵列，基因影响发展的磷酸盐剥夺进行了鉴定。根生长因子1（RGF1）和RGF2影响不同方面的根发育条件下的Pi剥夺。我们发现，RGF2影响的纵向生长速度在主根中响应Pi剥夺，而RGF1影响在根分生组织中的周向细胞数。这些数据表明，控制适应性发育的机制可能依赖于被认为是冗余作用的基因的不同功能，从而阐明了重要发育调节因子的新功能。
Growing agricultural demands in the face of impending phosphate (Pi) shortages underscore a need for a better understanding of plant development under conditions of Pi-deprivation. Pi is an essential nutrient that is a major component of fertilizer. Plants have evolved strategies to improve acquisition of this nutrient by altering root development under shortage conditions. We show that signaling peptides thought to act redundantly in Arabidopsis thaliana development have distinct functions in response to Pi deprivation. Using microscopy and confocal imaging, roots were analyzed for growth rate and cellular composition. Using expression microarrays, genes influencing development in response to phosphate deprivation were identified. ROOT GROWTH FACTOR1 (RGF1) and RGF2 influenced different aspects of root development under conditions of Pi-deprivation. We found that RGF2 influenced the longitudinal growth rate in the primary root in response to Pi-deprivation, whereas RGF1 affected circumferential cell number in the root meristem. These data suggest that mechanisms controlling adaptive development can depend on disparate functions of genes thought to act redundantly thus elucidating new functions for important developmental regulators.
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影响因子：
9.8
作者：
Levesque MP;Vernoux T;Busch W;Cui H;Wang JY;Blilou I;Hassan H;Nakajima K;Matsumoto N;Lohmann JU;Scheres B;Benfey PN
通讯作者：
Benfey PN
DOI：
10.1073/pnas.0500778102
发表时间：
2005-05-24
影响因子：
11.1
作者：
Miura, K;Rus, A;Hasegawa, PM
通讯作者：
Hasegawa, PM
影响因子：
7.4
作者：
Wu, P;Ma, LG;Deng, XW
通讯作者：
Deng, XW
影响因子：
7.3
作者：
Ma, Z;Bielenberg, DG;Lynch, JP
通讯作者：
Lynch, JP
DOI：
10.1073/pnas.0505266102
发表时间：
2005-08-16
影响因子：
11.1
作者：
Misson, J;Raghothama, KG;Thibaud, MC
通讯作者：
Thibaud, MC