Soil compaction represents one of the major challenges facing modern agriculture due to poor tillage practices and increasing weight of farm equipment. Mechanical impedance reduce crop yields by <75% as roots struggle to penetrate hard soils, causing billions of dollars in losses annually. Soil compaction triggers a reduction in root growth, limiting the availability of water and nutrients. Compaction also reduces the number and volume of air-filled soil pores, restricting diffusion of gases between roots and the rhizosphere. We recently discovered that plants employ the gaseous hormone ethylene released from root tips to sense soil compaction. The reduced porosity of compacted soil appears to restrict diffusion of ethylene out of roots, triggering growth inhibition.
Dr. Bipin Pandey is BBSRC Discovery Fellow at University of Nottingham. His main focus is to discover novel root adaptive responses and signals which provide greater access to nutrients and water in poor soils. Recently, Dr. Pandey discovered that ethylene acts as a key signal to sense soil compaction (Pandey et al., 2021, Science). Moreover, he co-discovered that how the hormone auxin plays a key role during low phosphate stress by promoting hair elongation (Bhosale, et al, 2018, Nature Comms; Giri et al, 2018, Nature Comms). Dr. Bipin Pandey is employing multidisciplinary approaches to uncover the mechanism of root tip elongation underpinning the root adaptive responses in poor and problematic soils.
Dr. Pandey's recent Science paper has been discussed in articles in > 20 newspapers around the world – such as:
https://uk.news.yahoo.com/mutant-roots-reveal-grow-crops-190023181.html New discovery paves way for crops to be grown in damaged soils - FarmingUK News
www.farminguk.com Hard to crack research reveals how crop roots penetrate hard soils
Plus interviews for national radio stations in >10 countries in America, Europe and Asia e.g. 5LiveScience show on BBC Radio 5 Live:
https://www.bbc.co.uk/sounds/play/m000rdzv (about 33 mins in)
There is also an easy to read summary in the online international science blog The Conversation:
“Mutant roots reveal how we can grow crops in damaged soils” has been published on.
Here's the link: https://theconversation.com/mutant-roots-reveal-how-we-can-grow-crops-in-damaged-soils-153140
- 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. Plant roots sense soil compaction through restricted ethylene diffusion. SCIENCE15 JAN 2021 : 276-280
PRIGGE MJ, PLATRE M, KADAKIA N, ZHANG Y, GREENHAM K, SZUTU W, PANDEY BK, BHOSALE RA, BENNETT MJ, BUSCH W and ESTELLE M, 2020. Genetic analysis of the Arabidopsis TIR1/AFB auxin receptors reveals both overlapping and specialized functions. eLife. 9,
PANDEY BK and BENNETT MJ, 2019. A New Angle on How Roots Acclimate to Sporadic Rainfall. Cell. 178(2), 269-271
BHOSALE R, GIRI J, PANDEY BK, GIEHL RFH, HARTMANN A, TRAINI R, TRUSKINA J, LEFTLEY N, HANLON M, SWARUP K, RASHED A, VOß U, ALONSO J, STEPANOVA A, YUN J, LJUNG K, BROWN KM, LYNCH JP, DOLAN L, VERNOUX T, BISHOPP A, WELLS D, VON WIRÉN N, BENNETT MJ and SWARUP R, 2018. A mechanistic framework for auxin dependent Arabidopsis root hair elongation to low external phosphate. Nature communications. 9(1), 1409
HUANG G, LIANG W, STURROCK CJ, PANDEY BK, GIRI J, MAIRHOFER S, WANG D, MULLER L, TAN H, YORK LM, YANG J, SONG Y, KIM YJ, QIAO Y, XU J, KEPINSKI S, BENNETT MJ and ZHANG D, 2018. Rice actin binding protein RMD controls crown root angle in response to external phosphate. Nature communications. 9(1), 2346
GIRI J, BHOSALE R, HUANG G, PANDEY BK, PARKER H, ZAPPALA S, YANG J, DIEVART A, BUREAU C, LJUNG K, PRICE A, ROSE T, LARRIEU A, MAIRHOFER S, STURROCK CJ, WHITE P, DUPUY L, HAWKESFORD M, PERIN C, LIANG W, PERET B, HODGMAN CT, LYNCH J, WISSUWA M, ZHANG D, PRIDMORE T, MOONEY SJ, GUIDERDONI E, SWARUP R and BENNETT MJ, 2018. Rice auxin influx carrier OsAUX1 facilitates root hair elongation in response to low external phosphate. Nature communications. 9(1), 1408
MEHRA P, PANDEY BK, VERMA L and GIRI J, 2018. A novel glycerophosphodiester phosphodiesterase improves phosphate deficiency tolerance in rice. Plant, cell & environment. 42(4), 1167-1179
PANDEY BK, MEHRA P, VERMA L, BHADOURIA J and GIRI J, 2017. OsHAD1, a Haloacid Dehalogenase-Like APase, Enhances Phosphate Accumulation. Plant physiology. 174(4), 2316-2332
MEHRA P, PANDEY BK and GIRI J, 2017. Improvement in phosphate acquisition and utilization by a secretory purple acid phosphatase (OsPAP21b) in rice. Plant biotechnology journal. 15(8), 1054-1067
SIROHI G, PANDEY BK, DEVESHWAR P and GIRI J, 2016. Emerging Trends in Epigenetic Regulation of Nutrient Deficiency Response in Plants. Molecular biotechnology. 58(3), 159-71
MEHRA P, PANDEY BK and GIRI J, 2016. Comparative Morphophysiological Analyses and Molecular Profiling Reveal Pi-Efficient Strategies of a Traditional Rice Genotype. Frontiers in plant science. 6, 1184
SINGH, AJIT P., PANDEY, BIPIN K., DEVESHWAR, PRIYANKA, NARNOLIYA, LAXMI, PARIDA, SWARUP K. and GIRI, JITENDER, 2015. JAZ Repressors: Potential Involvement in Nutrients Deficiency Response in Rice and Chickpea FRONTIERS IN PLANT SCIENCE. 6,
MEHRA, POONAM, PANDEY, BIPIN K. and GIRI, JITENDER, 2015. Genome-wide DNA polymorphisms in low Phosphate tolerant and sensitive rice genotypes SCIENTIFIC REPORTS. 5