Low phosphorus availability increases shoot boron concentration in canola and potato but not in wheat

Yanliang Wang, Nicholas Clarke and Anne Falk Řgaard
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Nicholas Clarke: Norwegian Institute of Bioeconomy Research, Ås, Norway
Anne Falk Řgaard: Norwegian Institute of Bioeconomy Research, Ås, Norway

Plant, Soil and Environment, 2018, vol. 64, issue 11, 564-570

Abstract: A large proportion of global agricultural soils contain suboptimal available phosphorus (P) for the growth of many plant species. Boron (B) plays important roles in plant growth and development, but limited research has been conducted to study B uptake under low P availability. This study comprised a hydroponic and a mini-rhizobox experiment with canola (Brassica napus L.), potato (Solanum tuberosum L.) and wheat (Triticum aestivum L.) under P sufficient and deficient conditions. Boron concentrations, rhizosphere soil pH, and gene expression of BnBOR1 in canola were determined. Shoot B concentrations were found significantly increased (11-149%) by low P availability in potato and canola but not in wheat. Reverse transcription polymerase chain reaction (RT-PCR) indicated that BnBOR1;2a, BnBOR1;2c, and BnBOR1;3c were up-regulated after seven days of low P treatment in canola roots. Our results indicate that plant shoot B concentration was dramatically influenced by P availability, and dicots and monocots showed a contrasting B concentration response to low P availability.

Keywords: macronutrient; deficiency; toxicity; nutrition; long-term experiment; boron transporter (search for similar items in EconPapers)
Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:64:y:2018:i:11:id:526-2018-pse

DOI: 10.17221/526/2018-PSE

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