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 Mori, Yoshiyuki Murata

Research output: Contribution to journalArticle

26 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 languageEnglish
Pages (from-to)2037-2042
Number of pages6
JournalBioscience, Biotechnology and Biochemistry
Volume73
Issue number9
DOIs
Publication statusPublished - 2009

Fingerprint

Seedlings
Proline
Salts
Betaine
Salt-Tolerance
Acids
Light
stachydrine
Oryza

Keywords

  • Apoplastic flow
  • Proline
  • Rice
  • Salt stress

ASJC Scopus subject areas

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

Cite this

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; Murata, Yoshiyuki.

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

Research output: Contribution to journalArticle

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AU - Nakamura, Yoshimasa

AU - Hirai, Yoshihiko

AU - Mori, Izumi

AU - Murata, Yoshiyuki

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