Maintaining higher leaf photosynthesis after heading stage could promote biomass accumulation in rice

Abstract Leaf photosynthetic rate changes across the growing season as crop plants age. Most studies of leaf photosynthesis focus on a specific growth stage, leaving the question of which pattern of photosynthetic dynamics maximizes crop productivity unanswered. Here we obtained high-frequency data...

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Auteurs principaux:	Sotaro Honda, Satoshi Ohkubo, Nan Su San, Anothai Nakkasame, Kazuki Tomisawa, Keisuke Katsura, Taiichiro Ookawa, Atsushi J. Nagano, Shunsuke Adachi
Format:	article
Langue:	EN
Publié:	Nature Portfolio 2021
Sujets:	Medicine R Science Q
Accès en ligne:	https://doaj.org/article/adf88f81b1ff4eefbea9e67d344d33c8
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spelling	oai:doaj.org-article:adf88f81b1ff4eefbea9e67d344d33c82021-12-02T14:21:21ZMaintaining higher leaf photosynthesis after heading stage could promote biomass accumulation in rice10.1038/s41598-021-86983-92045-2322https://doaj.org/article/adf88f81b1ff4eefbea9e67d344d33c82021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-86983-9https://doaj.org/toc/2045-2322Abstract Leaf photosynthetic rate changes across the growing season as crop plants age. Most studies of leaf photosynthesis focus on a specific growth stage, leaving the question of which pattern of photosynthetic dynamics maximizes crop productivity unanswered. Here we obtained high-frequency data of canopy leaf CO2 assimilation rate (A) of two elite rice (Oryza sativa) cultivars and 76 inbred lines across the whole growing season. The integrated A value after heading was positively associated with crop growth rate (CGR) from heading to harvest, but that before heading was not. A curve-smoothing analysis of A after heading showed that accumulated A at > 80% of its maximum (A 80) was positively correlated with CGR in analyses of all lines mixed and of lines grouped by genetic background, while the maximum A and accumulated A at ≤ 80% were less strongly correlated with CGR. We also found a genomic region (~ 12.2 Mb) that may enhance both A 80 and aboveground biomass at harvest. We propose that maintaining a high A after heading, rather than having high maximum A, is a potential target for enhancing rice biomass accumulation.Sotaro HondaSatoshi OhkuboNan Su SanAnothai NakkasameKazuki TomisawaKeisuke KatsuraTaiichiro OokawaAtsushi J. NaganoShunsuke AdachiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Sotaro Honda Satoshi Ohkubo Nan Su San Anothai Nakkasame Kazuki Tomisawa Keisuke Katsura Taiichiro Ookawa Atsushi J. Nagano Shunsuke Adachi Maintaining higher leaf photosynthesis after heading stage could promote biomass accumulation in rice
description	Abstract Leaf photosynthetic rate changes across the growing season as crop plants age. Most studies of leaf photosynthesis focus on a specific growth stage, leaving the question of which pattern of photosynthetic dynamics maximizes crop productivity unanswered. Here we obtained high-frequency data of canopy leaf CO2 assimilation rate (A) of two elite rice (Oryza sativa) cultivars and 76 inbred lines across the whole growing season. The integrated A value after heading was positively associated with crop growth rate (CGR) from heading to harvest, but that before heading was not. A curve-smoothing analysis of A after heading showed that accumulated A at > 80% of its maximum (A 80) was positively correlated with CGR in analyses of all lines mixed and of lines grouped by genetic background, while the maximum A and accumulated A at ≤ 80% were less strongly correlated with CGR. We also found a genomic region (~ 12.2 Mb) that may enhance both A 80 and aboveground biomass at harvest. We propose that maintaining a high A after heading, rather than having high maximum A, is a potential target for enhancing rice biomass accumulation.
format	article
author	Sotaro Honda Satoshi Ohkubo Nan Su San Anothai Nakkasame Kazuki Tomisawa Keisuke Katsura Taiichiro Ookawa Atsushi J. Nagano Shunsuke Adachi
author_facet	Sotaro Honda Satoshi Ohkubo Nan Su San Anothai Nakkasame Kazuki Tomisawa Keisuke Katsura Taiichiro Ookawa Atsushi J. Nagano Shunsuke Adachi
author_sort	Sotaro Honda
title	Maintaining higher leaf photosynthesis after heading stage could promote biomass accumulation in rice
title_short	Maintaining higher leaf photosynthesis after heading stage could promote biomass accumulation in rice
title_full	Maintaining higher leaf photosynthesis after heading stage could promote biomass accumulation in rice
title_fullStr	Maintaining higher leaf photosynthesis after heading stage could promote biomass accumulation in rice
title_full_unstemmed	Maintaining higher leaf photosynthesis after heading stage could promote biomass accumulation in rice
title_sort	maintaining higher leaf photosynthesis after heading stage could promote biomass accumulation in rice
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/adf88f81b1ff4eefbea9e67d344d33c8
work_keys_str_mv	AT sotarohonda maintaininghigherleafphotosynthesisafterheadingstagecouldpromotebiomassaccumulationinrice AT satoshiohkubo maintaininghigherleafphotosynthesisafterheadingstagecouldpromotebiomassaccumulationinrice AT nansusan maintaininghigherleafphotosynthesisafterheadingstagecouldpromotebiomassaccumulationinrice AT anothainakkasame maintaininghigherleafphotosynthesisafterheadingstagecouldpromotebiomassaccumulationinrice AT kazukitomisawa maintaininghigherleafphotosynthesisafterheadingstagecouldpromotebiomassaccumulationinrice AT keisukekatsura maintaininghigherleafphotosynthesisafterheadingstagecouldpromotebiomassaccumulationinrice AT taiichiroookawa maintaininghigherleafphotosynthesisafterheadingstagecouldpromotebiomassaccumulationinrice AT atsushijnagano maintaininghigherleafphotosynthesisafterheadingstagecouldpromotebiomassaccumulationinrice AT shunsukeadachi maintaininghigherleafphotosynthesisafterheadingstagecouldpromotebiomassaccumulationinrice
_version_	1718391567530590208

Maintaining higher leaf photosynthesis after heading stage could promote biomass accumulation in rice

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