Plant roots sense soil compaction through restricted ethylene diffusion

doi:10.1126/science.abf3013

GSTDTAP > 气候变化

DOI	10.1126/science.abf3013
	Plant roots sense soil compaction through restricted ethylene diffusion
	Bipin K. Pandey; Guoqiang Huang; Rahul Bhosale; Sjon Hartman; Craig J. Sturrock; Lottie Jose; Olivier C. Martin; Michal Karady; Laurentius A. C. J. Voesenek; Karin Ljung; Jonathan P. Lynch; Kathleen M. Brown; William R. Whalley; Sacha J. Mooney; Dabing Zhang; Malcolm J. Bennett
	2021-01-15
发表期刊	Science
出版年	2021
英文摘要	It's tough to drive a spade through compacted soil, and plant roots seem to have the same problem when growing in compacted ground. Pandey et al. found that the problem is not, however, one of physical resistance but rather inhibition of growth through a signaling pathway. The volatile plant hormone ethylene will diffuse through aerated soil, but compacted soil reduces such diffusion, increasing the concentration of ethylene near root tissues. The cellular signaling cascades triggered by too much ethylene stop root growth. Therefore, gaseous diffusion serves as a readout of soil compaction for plant roots growing in search of productive nutrition. Science , this issue p. [276][1] Soil compaction represents a major challenge for modern agriculture. Compaction is intuitively thought to reduce root growth by limiting the ability of roots to penetrate harder soils. We report that root growth in compacted soil is instead actively suppressed by the volatile hormone ethylene. We found that mutant Arabidopsis and rice roots that were insensitive to ethylene penetrated compacted soil more effectively than did wild-type roots. Our results indicate that soil compaction lowers gas diffusion through a reduction in air-filled pores, thereby causing ethylene to accumulate in root tissues and trigger hormone responses that restrict growth. We propose that ethylene acts as an early warning signal for roots to avoid compacted soils, which would be relevant to research into the breeding of crops resilient to soil compaction. [1]: /lookup/doi/10.1126/science.abf3013
领域	气候变化 ; 资源环境
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/311501
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Bipin K. Pandey,Guoqiang Huang,Rahul Bhosale,et al. Plant roots sense soil compaction through restricted ethylene diffusion[J]. Science,2021.
APA	Bipin K. Pandey.,Guoqiang Huang.,Rahul Bhosale.,Sjon Hartman.,Craig J. Sturrock.,...&Malcolm J. Bennett.(2021).Plant roots sense soil compaction through restricted ethylene diffusion.Science.
MLA	Bipin K. Pandey,et al."Plant roots sense soil compaction through restricted ethylene diffusion".Science (2021).