SAMS1 stimulates tomato root growth and P availability via activating polyamines and ethylene synergetic signaling under low-P condition
SAMS1 stimulates tomato root growth and P availability via activating polyamines and ethylene synergetic signaling under low-P condition
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SAMS1 通过在低磷条件下激活多胺和乙烯协同信号来刺激番茄根系生长和磷的利用率
DOI：
10.1016/j.envexpbot.2022.104844
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发表时间：
2022-03
影响因子：
5.7
通讯作者：
Biao Gong
中科院分区：
文献类型：
--
作者：
Bing Wang;Ziyuan Gao;Qinghua Shi;Biao Gong
植物对磷的利用率低，限制了作物产量，造成了环境污染。SAMS1控制多胺和乙烯的合成，并积极响应各种生物和非生物胁迫。然而，SAMS1是如何调节植物磷效率的还不清楚。本研究表明，SAMS1基因的过表达提高了番茄的磷效率。结果表明，SAMS1的过表达通过促进腐胺向亚精胺/精胺的转化，减少腐胺的积累，从而诱导过氧化氢的产生。这不仅促进了低磷条件下番茄侧根的发生，而且促进了侧根的连续伸长，形成了番茄适应低磷的根系形态特征。除形态调控外，SAMS1还通过多胺和乙烯信号促进根系H+-ATPase活性和H+分泌，促进P的吸收。然而，磷酸酶活性、细胞壁P的再利用及其在根中的分布仅受SAMS1介导的乙烯信号的诱导。田间试验表明，使用高表达SAMS1的转基因砧木显著减少了磷肥的投入，促进了植株的生长和产量。综上所述，SAMS1通过激活PAS和Eth的协同信号，促进番茄根系生长和磷的利用。
Phosphorus (P) utilization by plants is low, which limits crop yields and causes environmental pollution.SAMS1controls polyamines and ethylene synthesis, and actively responds to various biotic and abiotic stresses. However, howSAMS1regulates plant P efficiency remains unclear. This study showed thatSAMS1-overexpressing improves tomato P efficiency. As a result, overexpression ofSAMS1reduced the accumulation of putrescine and, which induced H2O2by promoting the conversion of putrescine to spermidine/spermine. This not only facilitated the occurrence of lateral roots under low-P conditions but also promoted the continuous elongation of lateral roots, forming the low-P adaptive root morphological characteristics in tomato plants. In addition to morphological regulation,SAMS1also promoted root H+-ATPase activity and H+secretion through polyamines and ethylene signals, enhancing P absorption. However, the phosphatase activity, reutilization of cell wall P, and its distribution to the root was only induced bySAMS1-mediated ethylene signal. Field experiments showed that usingSAMS1-overexpressing transgenic rootstocks significantly reduced the input of P fertilizer, promoted plant growth and yield. Together,SAMS1can promote tomato root growth and P utilization by activating synergistic signals of PAs and Eth.
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影响因子：
7.3
作者：
Kaoru Urano;Y. Yoshiba;T. Nanjo;Y. Igarashi;M. Seki;F. Sekiguchi;K. Yamaguchi-Shinozaki;K. Shinozaki
通讯作者：
Kaoru Urano;Y. Yoshiba;T. Nanjo;Y. Igarashi;M. Seki;F. Sekiguchi;K. Yamaguchi-Shinozaki;K. Shinozaki
影响因子：
56.9
作者：
Wild, Rebekka;Gerasimaite, Ruta;Mayer, Andreas
通讯作者：
Mayer, Andreas
S-腺苷-L-甲硫氨酸合成酶的过度表达通过多胺代谢增强番茄对碱胁迫的耐受性
影响因子：
13.8
作者：
Gong, Biao;Li, Xiu;Wang, Xiufeng
通讯作者：
Wang, Xiufeng
影响因子：
4.3
作者：
Xia Ye;Mengmeng Fu;Yu Liu;Dongliang An;Xianbo Zheng;B. Tan;Jidong Li;Jun Cheng;Wei Wang;Jiancan Feng
通讯作者：
Xia Ye;Mengmeng Fu;Yu Liu;Dongliang An;Xianbo Zheng;B. Tan;Jidong Li;Jun Cheng;Wei Wang;Jiancan Feng
影响因子：
5.2
作者：
Zapata, PJ;Serrano, M;Botella, MA
通讯作者：
Botella, MA