Exogenous proline and glycinebetaine suppress apoplastic flow to reduce Na+ uptake in rice seedlings

Muhammad Abdus Sobahan; Carlos Raul Arias; Eiji Okuma; Yasuaki Shimoishi; Yoshimasa Nakamura; Yoshihiko Hirai; Izumi C. Mori; Yoshiyuki Murata

doi:10.1271/bbb.90244

Exogenous proline and glycinebetaine suppress apoplastic flow to reduce Na⁺ uptake in rice seedlings

Muhammad Abdus Sobahan, Carlos Raul Arias, Eiji Okuma, Yasuaki Shimoishi, Yoshimasa Nakamura, Yoshihiko Hirai, Izumi C. Mori, Yoshiyuki Murata

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

The application of exogenous proline and glycinebetaine (betaine) confers salt tolerance on plants undersalt stress. The e?ects of exogenous proline and betaine on apoplastic ?ow in rice plants under saline conditions were investigated using trisodium-8-hydroxy-1,3,6-pyr-enetrisulphonic acid (PTS), an apoplastic tracer. Rice plants took up more PTS under light conditions than under dark conditions. Salt stress increased PTS uptake and Nap content of rice leaves, but did not a?ect Kp content, resulting in a lower Kp/Nap ratio. Addition of proline or betaine to the saline medium suppressed Napinduced PTS uptake and Nap accumulation, while the Kp content was slightly increased, which led to a high Kp/Nap ratio under saline conditions. These results suggest that exogenous proline and betaine suppressed Nap-enhanced apoplastic ?ow to reduce Nap uptake in rice plants.

Original language	English
Pages (from-to)	2037-2042
Number of pages	6
Journal	Bioscience, Biotechnology and Biochemistry
Volume	73
Issue number	9
DOIs	https://doi.org/10.1271/bbb.90244
Publication status	Published - 2009

Keywords

Apoplastic flow
Proline
Rice
Salt stress

ASJC Scopus subject areas

Biotechnology
Analytical Chemistry
Biochemistry
Applied Microbiology and Biotechnology
Molecular Biology
Organic Chemistry

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10.1271/bbb.90244

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Exogenous proline and glycinebetaine suppress apoplastic flow to reduce Na⁺ uptake in rice seedlings. / Sobahan, Muhammad Abdus; Arias, Carlos Raul; Okuma, Eiji; Shimoishi, Yasuaki; Nakamura, Yoshimasa ; Hirai, Yoshihiko ; Mori, Izumi C.; Murata, Yoshiyuki.

In: Bioscience, Biotechnology and Biochemistry, Vol. 73, No. 9, 2009, p. 2037-2042.

Research output: Contribution to journal › Article › peer-review

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title = "Exogenous proline and glycinebetaine suppress apoplastic flow to reduce Na+ uptake in rice seedlings",

abstract = "The application of exogenous proline and glycinebetaine (betaine) confers salt tolerance on plants undersalt stress. The e?ects of exogenous proline and betaine on apoplastic ?ow in rice plants under saline conditions were investigated using trisodium-8-hydroxy-1,3,6-pyr-enetrisulphonic acid (PTS), an apoplastic tracer. Rice plants took up more PTS under light conditions than under dark conditions. Salt stress increased PTS uptake and Nap content of rice leaves, but did not a?ect Kp content, resulting in a lower Kp/Nap ratio. Addition of proline or betaine to the saline medium suppressed Napinduced PTS uptake and Nap accumulation, while the Kp content was slightly increased, which led to a high Kp/Nap ratio under saline conditions. These results suggest that exogenous proline and betaine suppressed Nap-enhanced apoplastic ?ow to reduce Nap uptake in rice plants.",

keywords = "Apoplastic flow, Proline, Rice, Salt stress",

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note = "Funding Information: The authors are grateful to Dr. Kuniyuki Saito of the Field Science Center, Faculty of Agriculture, Okayama University, for the generous gift of seeds of rice (Oryza sativa L., cv Nipponbare). This research was supported in part by Grants for Scientific Research on Priority Areas from the Ministry of Education, Culture, Sports, Science, and Technology of Japan. It was also supported by Grants-in-Aid for JSPS Fellows from the Japan Society for the Promotion of Science (to S.M.).",

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AU - Nakamura, Yoshimasa

AU - Hirai, Yoshihiko

AU - Mori, Izumi C.

AU - Murata, Yoshiyuki

N1 - Funding Information: The authors are grateful to Dr. Kuniyuki Saito of the Field Science Center, Faculty of Agriculture, Okayama University, for the generous gift of seeds of rice (Oryza sativa L., cv Nipponbare). This research was supported in part by Grants for Scientific Research on Priority Areas from the Ministry of Education, Culture, Sports, Science, and Technology of Japan. It was also supported by Grants-in-Aid for JSPS Fellows from the Japan Society for the Promotion of Science (to S.M.).

PY - 2009

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N2 - The application of exogenous proline and glycinebetaine (betaine) confers salt tolerance on plants undersalt stress. The e?ects of exogenous proline and betaine on apoplastic ?ow in rice plants under saline conditions were investigated using trisodium-8-hydroxy-1,3,6-pyr-enetrisulphonic acid (PTS), an apoplastic tracer. Rice plants took up more PTS under light conditions than under dark conditions. Salt stress increased PTS uptake and Nap content of rice leaves, but did not a?ect Kp content, resulting in a lower Kp/Nap ratio. Addition of proline or betaine to the saline medium suppressed Napinduced PTS uptake and Nap accumulation, while the Kp content was slightly increased, which led to a high Kp/Nap ratio under saline conditions. These results suggest that exogenous proline and betaine suppressed Nap-enhanced apoplastic ?ow to reduce Nap uptake in rice plants.

AB - The application of exogenous proline and glycinebetaine (betaine) confers salt tolerance on plants undersalt stress. The e?ects of exogenous proline and betaine on apoplastic ?ow in rice plants under saline conditions were investigated using trisodium-8-hydroxy-1,3,6-pyr-enetrisulphonic acid (PTS), an apoplastic tracer. Rice plants took up more PTS under light conditions than under dark conditions. Salt stress increased PTS uptake and Nap content of rice leaves, but did not a?ect Kp content, resulting in a lower Kp/Nap ratio. Addition of proline or betaine to the saline medium suppressed Napinduced PTS uptake and Nap accumulation, while the Kp content was slightly increased, which led to a high Kp/Nap ratio under saline conditions. These results suggest that exogenous proline and betaine suppressed Nap-enhanced apoplastic ?ow to reduce Nap uptake in rice plants.

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