Acclimation responses of Arabidopsis thaliana to sustained phosphite treatments.
Acclimation responses of Arabidopsis thaliana to sustained phosphite treatments.
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DOI：
10.1093/jxb/ert037
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发表时间：
2013-04
影响因子：
6.9
通讯作者：
Lambers H
中科院分区：
文献类型：
--
作者：
Berkowitz O;Jost R;Kollehn DO;Fenske R;Finnegan PM;O'Brien PA;Hardy GE;Lambers H
亚磷酸盐通过扰乱大量营养素磷酸盐的动态平衡，在植物中诱导一系列的生理和发育反应。由于其与磷酸盐在结构上的相似性，亚磷酸盐损害了磷酸盐的感知、膜运输和亚细胞区隔作用。此外，亚磷酸盐通过一种未知的作用模式诱导植物防御反应。在这项研究中，研究了拟南芥植株对生长介质中持续供应亚磷酸盐的适应，并与在不同磷酸盐供应下生长的植物进行了比较。与磷酸盐不同，亚磷酸盐对几个拟南芥材料的侧根形成没有抑制作用。此外，已有文献记载的磷饥饿诱导基因，如miRNA399d和AT4的表达不受亚磷酸盐积累的抑制，而PHT1；1和PAP1的诱导被增强。因此，在这些典型的磷酸盐饥饿反应中，没有观察到亚磷酸盐对磷酸盐的模拟。亚磷酸盐处理植物的代谢组学分析显示，几种代谢物库发生了变化，最显著的是天冬氨酸、天冬氨酸、谷氨酸和丝氨酸的代谢物库。这些氨基酸库的变化为理解亚磷酸盐诱导的病原菌抗性提供了新的见解。
Phosphite () induces a range of physiological and developmental responses in plants by disturbing the homeostasis of the macronutrient phosphate. Because of its close structural resemblance to phosphate, phosphite impairs the sensing, membrane transport, and subcellular compartmentation of phosphate. In addition, phosphite induces plant defence responses by an as yet unknown mode of action. In this study, the acclimation of Arabidopsis thaliana plants to a sustained phosphite supply in the growth medium was investigated and compared with plants growing under varying phosphate supplies. Unlike phosphate, phosphite did not suppress the formation of lateral roots in several Arabidopsis accessions. In addition, the expression of well-documented phosphate-starvation-induced genes, such as miRNA399d and At4, was not repressed by phosphite accumulation, whilst the induction of PHT1;1 and PAP1 was accentuated. Thus, a mimicking of phosphate by phosphite was not observed for these classical phosphate-starvation responses. Metabolomic analysis of phosphite-treated plants showed changes in several metabolite pools, most prominently those of aspartate, asparagine, glutamate, and serine. These alterations in amino acid pools provide novel insights for the understanding of phosphite-induced pathogen resistance.
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影响因子：
3.5
作者：
Friedrich, L;Lawton, K;Ryals, J
通讯作者：
Ryals, J
DOI：
10.1073/pnas.95.4.1950
发表时间：
1998-02-17
影响因子：
11.1
作者：
Essigmann, B;Güler, S;Benning, C
通讯作者：
Benning, C
影响因子：
7.4
作者：
Aung, Kyaw;Lin, Shu-I;Chiou, Tzyy-Jen
通讯作者：
Chiou, Tzyy-Jen
影响因子：
3
作者：
Arvidsson S;Kwasniewski M;Riaño-Pachón DM;Mueller-Roeber B
通讯作者：
Mueller-Roeber B
影响因子：
3.9
作者：
Brauc, S.;De Vooght, E.;Angenon, G.
通讯作者：
Angenon, G.