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Syamsidah Rahmawati

Research Center for Biotechnology, Indonesian Institute of Sciences (LIPI)

Author-ID : 3964853

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Immunology & microbiology Medicine & Pharmacology

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Editorial Boards AB Vol 22 No 1 (2018) Syamsidah Rahmawati
ANNALES BOGORIENSES Vol 22, No 1 (2018): Annales Bogorienses
Publisher : Research Center for Biotechnology - Indonesian Institute of Sciences (LIPI)

Overexpression of OsHox-6 Gene Enhanced Tiller Number in Rice But Induced Yield Penalty Syamsidah Rahmawati; Chairunnisa Chairunnisa; Eva Erdayani; Satya Nugroho; Amy Estiati
ANNALES BOGORIENSES Vol 23, No 1 (2019): Annales Bogorienses
Publisher : Research Center for Biotechnology - Indonesian Institute of Sciences (LIPI)

OsHox-6, belongs to the transcription factor homeodomain leucine zipper (HD-Zip) protein sub-family I, has unknown function. This study was aimed to characterize the phenotypes of two homozygous transgenic rice lines (S29-62-2 and S.40.4-158-1) containing an extra copy of OsHox-6 gene under the control of a rice constitutive promoter, OsLEA3, and to evaluate their tolerance to water stress. A real-time quantitative PCR (qRT-PCR) showed that the transcript expression of OsHox-6 gene in the transgenic lines increased 5-10 folds under a normal irrigation and 10-20 folds after exposure to water stress conditions as compared to its wild type control. Transgenic plants overexpressing OsHox-6 exhibited phenotypic alteration at the normal irrigation by inducing tiller formation, suggesting a decrease in the apical dominance. Transgenic plants also showed significant enhancement in the total grain number, however, the number of empty grains also increased significantly (~16-22%). After imposed to the water stress, the number of empty grains in the transgenic lines was even higher (up to 83% in average). Furthermore, observations on the water loss rates, relative water contents and drought resistance indices (DRI) suggested that the overexpression of OsHox-6 did not significantly increase tolerance to water stress. Further research is required to reveal the detailed mechanisms of OsHox-6 in response to water and other abiotic stresses.

Editor's Preface AB Vol 22 No 1 (2018) Syamsidah Rahmawati
ANNALES BOGORIENSES Vol 22, No 1 (2018): Annales Bogorienses
Publisher : Research Center for Biotechnology - Indonesian Institute of Sciences (LIPI)

Guide for Authors AB Vol 22 No 1 (2018) Syamsidah Rahmawati
ANNALES BOGORIENSES Vol 22, No 1 (2018): Annales Bogorienses
Publisher : Research Center for Biotechnology - Indonesian Institute of Sciences (LIPI)

Back Cover AB Vol 22 No 1 (2018) Syamsidah Rahmawati
ANNALES BOGORIENSES Vol 22, No 1 (2018): Annales Bogorienses
Publisher : Research Center for Biotechnology - Indonesian Institute of Sciences (LIPI)

Front Cover AB Vol 22 No 1 (2018) Syamsidah Rahmawati
ANNALES BOGORIENSES Vol 22, No 1 (2018): Annales Bogorienses
Publisher : Research Center for Biotechnology - Indonesian Institute of Sciences (LIPI)

Co-Authors Amy Estiati Chairunnisa Chairunnisa Eva Erdayani Satya Nugroho

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