Carbonate-Induced Chemical Reductants Are Responsible for Iron Acquisition in Strategy I Wild Herbaceous Plants Native to Calcareous Grasslands

doi:10.1093/pcp/pcac038

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	Carbonate-Induced Chemical Reductants Are Responsible for Iron Acquisition in Strategy I Wild Herbaceous Plants Native to Calcareous Grasslands
	Wang, Baolan ; Wei, Haifang ; Chen, Zhuo ; Li, Yuting ; Zhang, Wen-Hao
刊名	PLANT AND CELL PHYSIOLOGY
	2022
卷号	63 期号:6 页码:770-784
关键词	Calcareous soils Chemical reductants Crop plants Physiological Fe deficiency Strategy I plant Temperate grassland Wild plants
ISSN号	0032-0781
DOI	10.1093/pcp/pcac038
文献子类	Article
英文摘要	Significant progress has been made in understanding Strategy I iron (Fe) acquisition using crop/model plants under controlled conditions in laboratories. However, plant species native to calcareous soils may have evolved unique strategies for adaptation to high carbonate/pH-induced Fe deficiency. Until now, little information is available on the Fe acquisition mechanisms in these plants. Here, we explored the Fe acquisition mechanisms in wild dicot species native to calcareous grasslands, by monitoring the Fe nutrition-related rhizosphere processes in field and greenhouse conditions. Most of these wild species displayed comparable shoot Fe concentration to those of crops, and some dicots actually accumulated very high shoot Fe. However, these species did not exhibit ferric reductase oxidase (FRO)-dependent Strategy I responses to Fe deficiency, including visual rhizosphere acidification and increased Fe3+ reduction. In contrast, chemical reductants exuded by roots of dicots were responsible for Fe3+ reduction in these wild plants. These features were not observed in the FRO-dependent Strategy I crop plant cucumber. Neither leaf chlorophyll nor shoot/root Fe was depressed by 10% CaCO3 application in all the examined wild species. Furthermore, their root exudation was significantly activated by CaCO3, leading to an increased Fe3+ reduction. We show that chemical reductant-mediated Fe3+ reduction occurs preferentially in these wild dicots and that these mechanisms are not sensitive to high soil carbonate/pH. Our findings support that Fe acquisition in Strategy I wild plants native to calcareous soils is substantially different from the enzyme-dependent system of Strategy I plants.
学科主题	Plant Sciences ; Cell Biology
电子版国际标准刊号	1471-9053
出版地	OXFORD
WOS关键词	FERRIC-CHELATE REDUCTASE ; MINERAL-NUTRITION ; DEFICIENCY ; ROOT ; GENE ; MOBILIZATION ; VARIABILITY ; PROTEIN ; LEAVES ; GRAIN
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000796689200001
资助机构	National Science Foundation of China [31830011, 31672227]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/28662]
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 2.Chen, Zhuo 3.Li, Yuting 4.[Wei, Haifang 5.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 6.[Wang, Baolan
推荐引用方式 GB/T 7714	Wang, Baolan,Wei, Haifang,Chen, Zhuo,et al. Carbonate-Induced Chemical Reductants Are Responsible for Iron Acquisition in Strategy I Wild Herbaceous Plants Native to Calcareous Grasslands[J]. PLANT AND CELL PHYSIOLOGY,2022,63(6):770-784.
APA	Wang, Baolan,Wei, Haifang,Chen, Zhuo,Li, Yuting,&Zhang, Wen-Hao.(2022).Carbonate-Induced Chemical Reductants Are Responsible for Iron Acquisition in Strategy I Wild Herbaceous Plants Native to Calcareous Grasslands.PLANT AND CELL PHYSIOLOGY,63(6),770-784.
MLA	Wang, Baolan,et al."Carbonate-Induced Chemical Reductants Are Responsible for Iron Acquisition in Strategy I Wild Herbaceous Plants Native to Calcareous Grasslands".PLANT AND CELL PHYSIOLOGY 63.6(2022):770-784.