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2022 ◽  
Author(s):  
Sheng Huang ◽  
Naoki Yamaji ◽  
Gen Sakurai ◽  
Namiki Mitani‐Ueno ◽  
Noriyuki Konishi ◽  
...  

2021 ◽  
Vol 773 ◽  
pp. 145637
Author(s):  
Yu Shen ◽  
Fang He ◽  
Jiahui Zhu ◽  
Huihui Zhang ◽  
Jia Wang ◽  
...  
Keyword(s):  

2021 ◽  
Author(s):  
Jiangzhe Zhao ◽  
Bingli Ding ◽  
Engao Zhu ◽  
Xiaojuan Deng ◽  
Mengyuan Zhang ◽  
...  

Abstract Root-synthesized cytokinins are transported to the shoot and regulate the growth, development, and stress responses of aerial tissues. Previous studies have demonstrated that Arabidopsis (Arabidopsis thaliana) ATP binding cassette (ABC) transporter G family member 14 (AtABCG14) participates in xylem loading of root-synthesized cytokinins. However, the mechanism by which these root-derived cytokinins are distributed in the shoot remains unclear. Here, we revealed that AtABCG14-mediated phloem unloading through the apoplastic pathway is required for the appropriate shoot distribution of root-synthesized cytokinins in Arabidopsis. Wild-type rootstocks grafted to atabcg14 scions successfully restored trans-zeatin xylem loading. However, only low levels of root-synthesized cytokinins and induced shoot signaling were rescued. Reciprocal grafting and tissue-specific genetic complementation demonstrated that AtABCG14 disruption in the shoot considerably increased the retention of root-synthesized cytokinins in the phloem and substantially impaired their distribution in the leaf apoplast. The translocation of root-synthesized cytokinins from the xylem to the phloem and the subsequent unloading from the phloem are required for the shoot distribution and long-distance shootward transport of root-synthesized cytokinins. This study revealed a mechanism by which the phloem regulates systemic signaling of xylem-mediated transport of root-synthesized cytokinins from the root to the shoot.


2019 ◽  
Vol 512 (1) ◽  
pp. 112-118 ◽  
Author(s):  
Longtao Tan ◽  
Yuxing Zhu ◽  
Tony Fan ◽  
Can Peng ◽  
Jiurong Wang ◽  
...  
Keyword(s):  

2014 ◽  
Vol 203 (2) ◽  
pp. 508-519 ◽  
Author(s):  
Anna D. Kozhevnikova ◽  
Ilya V. Seregin ◽  
Nadezhda T. Erlikh ◽  
Taisiya A. Shevyreva ◽  
Igor M. Andreev ◽  
...  
Keyword(s):  

2013 ◽  
Vol 163 (3) ◽  
pp. 1353-1362 ◽  
Author(s):  
Fenglin Deng ◽  
Naoki Yamaji ◽  
Jixing Xia ◽  
Jian Feng Ma
Keyword(s):  

2011 ◽  
Vol 75 (12) ◽  
pp. 2421-2423 ◽  
Author(s):  
Masataka KAJIKAWA ◽  
Takahiro FUJIBE ◽  
Shimpei URAGUCHI ◽  
Kyoko MIWA ◽  
Toru FUJIWARA

2009 ◽  
Vol 166 (6) ◽  
pp. 579-587 ◽  
Author(s):  
Ling-li Lu ◽  
Sheng-ke Tian ◽  
Xiao-e Yang ◽  
Ting-qiang Li ◽  
Zhen-li He

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