Assessing the Effect of a Major Quantitative Locus for Phosphorus Uptake ( Pup1 ) in Rice ( O. sativa L.) Grown under a Temperate Region

Ian Paul Navea, Jae-Hyuk Han, Na-Hyun Shin, O New Lee, Soon-Wook Kwon, Il-Ryong Choi and Joong Hyoun Chin ()
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Ian Paul Navea: Department of Integrative Biological Sciences and Industry, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul 05006, Republic of Korea
Jae-Hyuk Han: Department of Integrative Biological Sciences and Industry, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul 05006, Republic of Korea
Na-Hyun Shin: Department of Integrative Biological Sciences and Industry, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul 05006, Republic of Korea
O New Lee: Department of Bioindustry and Bioresource Engineering, Plant Engineering Research Institute, Sejong University, Seoul 05006, Republic of Korea
Soon-Wook Kwon: Department of Plant Bioscience, College of Natural Resources and Life Science, Pusan National University, Milyang 50463, Republic of Korea
Il-Ryong Choi: The International Rice Research Institute—Korea Office, National Institute of Crop Science, Rural Development Administration, Iseo-myeon, Wanju-gun 55365, Republic of Korea
Joong Hyoun Chin: Department of Integrative Biological Sciences and Industry, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul 05006, Republic of Korea

Agriculture, 2022, vol. 12, issue 12, 1-16

Abstract: Water and phosphorus (P) fertilizer are two of the most critical inputs in rice cultivation. Irrigation and chemical fertilizers are becoming limiting factors under climate change and urbanization, which is leading to significant losses in yield. The Pup1 quantitative trait locus (QTL) confers tolerance to P starvation through enhanced early-stage root vigor and P uptake in indica rice grown in the tropics. Whether the QTL works in temperate rice genetic backgrounds grown in temperate regions remains to be elucidated. To address this question, we introgressed the Pup1 QTL into three temperate rice varieties—MS11, TR22183, and Dasanbyeo—using marker-assisted backcrossing and high-density genotyping. The selected lines all harbored the full Pup1 QTL with recurrent parent genome recovery rates ranging from 66.5% to 99.8%. Under the rainfed and P non-supplied conditions, Pup1 introgression lines did not show clear advantages over the recurrent parents in terms of vegetative growth and grain yield per plant, but exhibited enhanced yield responses to P application, except in Dasanbyeo, which a temperate rice that is genetically similar to indica . Our results suggest that Pup1 confers enhanced P uptake in temperate rice and that the efficacy of Pup1 might depend on the subspecific genomic background of the rice, whether it is japonica or indica .

Keywords: climate change; Pup1; marker-assisted breeding; abiotic stress; phosphorus uptake; drought (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2022
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