Photosynthetic nitrogen- and water-use efficiencies in C3 and C4 subtype grasses grown under two nitrogen supply levels

C4 plants have higher photosynthetic nitrogen- and water-use efficiencies (PNUE and PWUE) than C3 plants. Some studies on C4 grasses have reported that NADP-malic enzyme (NADP-ME) grasses have higher PNUE than NAD-malic enzyme (NAD-ME) grasses, whereas other studies have suggested that this differen...

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Autores principales:	Yuko Togawa, Osamu Ueno
Formato:	article
Lenguaje:	EN
Publicado:	Taylor & Francis Group 2021
Materias:	c3 grasses c4 grasses c4 biochemical subtype nitrogen supply photosynthetic nitrogen-use efficiency photosynthetic water-use efficiency Plant culture SB1-1110
Acceso en línea:	https://doaj.org/article/a55a42efaaa04e4cbf9c4545cb964611
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spelling	oai:doaj.org-article:a55a42efaaa04e4cbf9c4545cb9646112021-11-17T14:21:55ZPhotosynthetic nitrogen- and water-use efficiencies in C3 and C4 subtype grasses grown under two nitrogen supply levels1343-943X1349-100810.1080/1343943X.2021.2006069https://doaj.org/article/a55a42efaaa04e4cbf9c4545cb9646112021-11-01T00:00:00Zhttp://dx.doi.org/10.1080/1343943X.2021.2006069https://doaj.org/toc/1343-943Xhttps://doaj.org/toc/1349-1008C4 plants have higher photosynthetic nitrogen- and water-use efficiencies (PNUE and PWUE) than C3 plants. Some studies on C4 grasses have reported that NADP-malic enzyme (NADP-ME) grasses have higher PNUE than NAD-malic enzyme (NAD-ME) grasses, whereas other studies have suggested that this difference is caused by the traits of phylogenetic lineage. Further extensive studies are required to understand properly the PNUE and PWUE of C4 grasses. We investigated the PNUE and PWUE for 22 grass species of four photosynthetic types [4 NADP-ME, 6 NAD-ME, 6 phosphoenolpyruvate carboxykinase (PCK), and 6 C3 species] grown under two N supply levels. Under the same N level, the three C4 types showed higher photosynthetic rate and lower stomatal conductance and transpiration rate than the C3 type, but these parameters were similar in the C4 types. Although there were no significant differences in leaf mass per area and N content per leaf area among the four types, these traits tended to be somewhat lower in the NADP-ME type than in other types. As a result, PNUE was highest in the NADP-ME type, lowest in the C3 type, and intermediate in the NAD-ME and PCK types. PWUE was much higher in the C4 types than in the C3 type but similar in the C4 types. The N supply level did not greatly affect the trends of PNUE and PWUE. This study suggests that the NAD-ME and PCK grasses have the N-related physiological traits similar to each other but differing from the NADP-ME grasses.Yuko TogawaOsamu UenoTaylor & Francis Grouparticlec3 grassesc4 grassesc4 biochemical subtypenitrogen supplyphotosynthetic nitrogen-use efficiencyphotosynthetic water-use efficiencyPlant cultureSB1-1110ENPlant Production Science, Vol 0, Iss 0 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	c3 grasses c4 grasses c4 biochemical subtype nitrogen supply photosynthetic nitrogen-use efficiency photosynthetic water-use efficiency Plant culture SB1-1110
spellingShingle	c3 grasses c4 grasses c4 biochemical subtype nitrogen supply photosynthetic nitrogen-use efficiency photosynthetic water-use efficiency Plant culture SB1-1110 Yuko Togawa Osamu Ueno Photosynthetic nitrogen- and water-use efficiencies in C3 and C4 subtype grasses grown under two nitrogen supply levels
description	C4 plants have higher photosynthetic nitrogen- and water-use efficiencies (PNUE and PWUE) than C3 plants. Some studies on C4 grasses have reported that NADP-malic enzyme (NADP-ME) grasses have higher PNUE than NAD-malic enzyme (NAD-ME) grasses, whereas other studies have suggested that this difference is caused by the traits of phylogenetic lineage. Further extensive studies are required to understand properly the PNUE and PWUE of C4 grasses. We investigated the PNUE and PWUE for 22 grass species of four photosynthetic types [4 NADP-ME, 6 NAD-ME, 6 phosphoenolpyruvate carboxykinase (PCK), and 6 C3 species] grown under two N supply levels. Under the same N level, the three C4 types showed higher photosynthetic rate and lower stomatal conductance and transpiration rate than the C3 type, but these parameters were similar in the C4 types. Although there were no significant differences in leaf mass per area and N content per leaf area among the four types, these traits tended to be somewhat lower in the NADP-ME type than in other types. As a result, PNUE was highest in the NADP-ME type, lowest in the C3 type, and intermediate in the NAD-ME and PCK types. PWUE was much higher in the C4 types than in the C3 type but similar in the C4 types. The N supply level did not greatly affect the trends of PNUE and PWUE. This study suggests that the NAD-ME and PCK grasses have the N-related physiological traits similar to each other but differing from the NADP-ME grasses.
format	article
author	Yuko Togawa Osamu Ueno
author_facet	Yuko Togawa Osamu Ueno
author_sort	Yuko Togawa
title	Photosynthetic nitrogen- and water-use efficiencies in C3 and C4 subtype grasses grown under two nitrogen supply levels
title_short	Photosynthetic nitrogen- and water-use efficiencies in C3 and C4 subtype grasses grown under two nitrogen supply levels
title_full	Photosynthetic nitrogen- and water-use efficiencies in C3 and C4 subtype grasses grown under two nitrogen supply levels
title_fullStr	Photosynthetic nitrogen- and water-use efficiencies in C3 and C4 subtype grasses grown under two nitrogen supply levels
title_full_unstemmed	Photosynthetic nitrogen- and water-use efficiencies in C3 and C4 subtype grasses grown under two nitrogen supply levels
title_sort	photosynthetic nitrogen- and water-use efficiencies in c3 and c4 subtype grasses grown under two nitrogen supply levels
publisher	Taylor & Francis Group
publishDate	2021
url	https://doaj.org/article/a55a42efaaa04e4cbf9c4545cb964611
work_keys_str_mv	AT yukotogawa photosyntheticnitrogenandwateruseefficienciesinc3andc4subtypegrassesgrownundertwonitrogensupplylevels AT osamuueno photosyntheticnitrogenandwateruseefficienciesinc3andc4subtypegrassesgrownundertwonitrogensupplylevels
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Photosynthetic nitrogen- and water-use efficiencies in C3 and C4 subtype grasses grown under two nitrogen supply levels

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