caa a22 4500 606219137 CHVBK 20210128101116.0 cr unu---uuuuu 210128e20150601xx s 000 0 eng 10.1007/s11104-015-2404-x doi (NATIONALLICENCE)springer-10.1007/s11104-015-2404-x QTL associated with lateral root plasticity in response to soil moisture fluctuation stress in rice [Elektronische Daten] [Jonathan Niones, Yoshiaki Inukai, Roel Suralta, Akira Yamauchi] Background: Lateral root (LR) plasticity is a key trait that plays a significant role in plant adaptation to fluctuating soil moisture stressed environments. We previously had demonstrated that promoted LR production (LR plasticity) contributed to the maintenance in shoot dry matter production and grain yield under soil moisture fluctuation (SMF) stress. Aim: To identify quantitative trait loci (QTLs) associated with LR plasticity under SMF condition and their contributions to shoot dry matter production. Methods: F2 lines derived from Nipponbare x chromosome segment substituted line number 47 (Nipponbare/Kasalath) backcrosses were used to analyze ten substituted chromosome regions with ‘Kasalath' allele that are associated with root plasticity under SMF stress. Results: We mapped two closely linked QTLs on chromosome 12 region namely qTLRN-12 at seedling stage and qLLRN-12 at vegetative stage. Under SMF conditions, qTLRN-12 found at the flanking markers between TG154 and RM247 is responsible for the plasticity in total LR number while qLLRN-12 detected at the flanking markers between RM6296 and TG156 is associated with plasticity in L-type LR production. Kasalath genome contributed the corresponding alleles for increasing the mentioned root traits that resulted in a significant increase in shoot dry matter production under SMF stress. Conclusion: We identified two QTLs associated with LR plasticity on chromosome 12 which significantly contributed to the greater root system development and maintenance of total dry matter production under SMF stress. Springer International Publishing Switzerland, 2015 Chromosome segment substitution lines (CSSL) nationallicence Drought nationallicence Lateral roots nationallicence Quantitative trait loci (QTL) nationallicence Root plasticity nationallicence Waterlogging nationallicence CSSL : Chromosome segment substitution lines nationallicence CWL : Continuous waterlogging nationallicence LR : Lateral root nationallicence LLRN : L-type lateral root number nationallicence QTL : Quantitative trait loci nationallicence RDW : Root dry weight nationallicence RSR : Root to shoot ratio nationallicence SMF : Soil moisture fluctuation stress nationallicence TRL : Total root length nationallicence Niones Jonathan Philippine Rice Research Institute, Maligaya, 3119, Science City of Muñoz, Nueva Ecija, Philippines aut Inukai Yoshiaki International Cooperation Center for Agricultural Education, Nagoya University Chikusa, 464-8601, Nagoya, Japan aut Suralta Roel Philippine Rice Research Institute, Maligaya, 3119, Science City of Muñoz, Nueva Ecija, Philippines aut Yamauchi Akira Graduate School of Bioagricultural Sciences, Nagoya University Chikusa, 464-8601, Nagoya, Japan aut Plant and Soil Springer International Publishing 391/1-2(2015-06-01), 63-75 0032-079X 391:1-2<63 2015 391 11104 https://doi.org/10.1007/s11104-015-2404-x text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11104-015-2404-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Niones Jonathan Philippine Rice Research Institute, Maligaya, 3119, Science City of Muñoz, Nueva Ecija, Philippines aut NATIONALLICENCE 700 1- Inukai Yoshiaki International Cooperation Center for Agricultural Education, Nagoya University Chikusa, 464-8601, Nagoya, Japan aut NATIONALLICENCE 700 1- Suralta Roel Philippine Rice Research Institute, Maligaya, 3119, Science City of Muñoz, Nueva Ecija, Philippines aut NATIONALLICENCE 700 1- Yamauchi Akira Graduate School of Bioagricultural Sciences, Nagoya University Chikusa, 464-8601, Nagoya, Japan aut NATIONALLICENCE 773 0- Plant and Soil Springer International Publishing 391/1-2(2015-06-01), 63-75 0032-079X 391:1-2<63 2015 391 11104