A defensin-like protein drives cadmium efflux and allocation in rice.
A defensin-like protein drives cadmium efflux and allocation in rice.
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DOI:
10.1038/s41467-018-03088-0
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发表时间:
2018-02-13
影响因子:
16.6
通讯作者:
Gong JM
中科院分区:
文献类型:
--
作者:
Luo JS;Huang J;Zeng DL;Peng JS;Zhang GB;Ma HL;Guan Y;Yi HY;Fu YL;Han B;Lin HX;Qian Q;Gong JM
Pollution by heavy metals limits the area of land available for cultivation of food crops. A potential solution to this problem might lie in the molecular breeding of food crops for phytoremediation that accumulate toxic metals in straw while producing safe and nutritious grains. Here, we identify a rice quantitative trait locus we name cadmium (Cd) accumulation in leaf 1 (CAL1), which encodes a defensin-like protein. CAL1 is expressed preferentially in root exodermis and xylem parenchyma cells. We provide evidence that CAL1 acts by chelating Cd in the cytosol and facilitating Cd secretion to extracellular spaces, hence lowering cytosolic Cd concentration while driving long-distance Cd transport via xylem vessels. CAL1 does not appear to affect Cd accumulation in rice grains or the accumulation of other essential metals, thus providing an efficient molecular tool to breed dual-function rice varieties that produce safe grains while remediating paddy soils. Crops that allocate heavy metals to leaves rather than grains could allow phytoremediation of polluted soil while producing food that is safe to eat. Here, the authors show that a defensin-like protein promotes cadmium secretion from rice cells and allocation to leaves without causing accumulation in grain.
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影响因子:
7.4
作者:
Komarnytsky, S;Borisjuk, NV;Raskin, I
通讯作者:
Raskin, I
影响因子:
10.4
作者:
Åkesson A;Barregard L;Bergdahl IA;Nordberg GF;Nordberg M;Skerfving S
通讯作者:
Skerfving S
影响因子:
4.5
作者:
Chao DY;Silva A;Baxter I;Huang YS;Nordborg M;Danku J;Lahner B;Yakubova E;Salt DE
通讯作者:
Salt DE
影响因子:
13.8
作者:
Korenkov, Victor;King, Brian;Wagner, George J.
通讯作者:
Wagner, George J.
影响因子:
7.2
作者:
Clough, SJ;Bent, AF
通讯作者:
Bent, AF