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Plant roots perceive soil compaction through limited diffusion of ethylene.



A large amount of ethylene signals soil compaction.

It is difficult to drive a hoe through compacted soil, and the roots of the plant appear to have the same problem when growing in pandy’s compacted ground. And faculty It was found that the problem was not one physical resistance. Rather, it inhibits the growth through signaling. The volatile plant hormone ethylene spreads through aerated soils. But the compacted soil reduces the spread, increasing the concentration of ethylene near the root tissue. Descending cellular signaling from stopping excessive ethylene root growth. Thus, gas diffusion reads soil compaction for growing roots to find effective nutrition.

scienceThis problem is page 276.

Abstract

Soil compaction is a major challenge for modern agriculture. Compaction is an intuitively thought to reduce root growth, limiting the root̵

7;s ability to penetrate harder soil. We report that root growth in compacted soils is inhibited by ethylene, the volatile hormone instead. We find that the mutant Arabidopsis And rice roots that were not sensitive to ethylene permeability through compacted soil were more effective than wild roots. Our findings indicate that soil compaction reduces gas diffusion through air-filled pores reduction, which in turn causes ethylene to accumulate in root tissue and triggers a restricted hormonal response. The growth We propose that ethylene serves as an early warning signal for roots to avoid compaction soil, which will involve research into plant breeding resilient to soil compaction.


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