Plant roots sense soil compaction through restricted ethylene diffusion

0545884 - ÚEB 2022 RIV US eng J - Článek v odborném periodiku
Pandey, B. K. - Huang, G. - Bhosale, R. - Hartman, S. - Sturrock, C. - Jose, L. - Martin, O. C. - Karady, Michal - Voesenek, L. A. C. J. - Ljung, K. - Lynch, J. P. - Brown, K. M. - Whalley, W. R. - Mooney, S. J. - Zhang, D. - Bennett, M.J.
Plant roots sense soil compaction through restricted ethylene diffusion.
Science. Roč. 371, č. 6526 (2021), s. 276-280. ISSN 0036-8075. E-ISSN 1095-9203
Grant CEP: GA ČR(CZ) GJ20-25948Y
Institucionální podpora: RVO:61389030
Klíčová slova: STRESS RESPONSES * BULK-DENSITY * SHOOT GROWTH
Obor OECD: Plant sciences, botany
Impakt faktor: 63.832, rok: 2021
Způsob publikování: Open access
http://doi.org/10.1126/science.abf3013

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.
Trvalý link: http://hdl.handle.net/11104/0322510