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Manganese-induced regulations in growth, yield formation, quality characters, rice aroma and enzyme involved in 2-acetyl-1-pyrroline biosynthesis in fragrant rice.
- Source :
-
Plant physiology and biochemistry : PPB [Plant Physiol Biochem] 2016 Jun; Vol. 103, pp. 167-75. Date of Electronic Publication: 2016 Mar 09. - Publication Year :
- 2016
-
Abstract
- Micro-nutrient application is essential for normal plant growth while a little is known about manganese (Mn)-induced regulations in morpho-physiological attributes, aroma formation and enzyme involved in 2-acetyl-1-pyrroline (2-AP) biosynthesis in aromatic rice. Present study aimed to examine the influence of four levels of Mn i.e., Mn1 (100 mg MnSO4 pot(-1)), Mn2 (150 mg MnSO4 pot(-1)), Mn3 (200 mg MnSO4 pot(-1)), and Mn4 (250 mg MnSO4 pot(-1)) on the growth, yield formation, quality characters, rice aroma and enzyme involved in 2-acetyl-1-pyrroline biosynthesis in two fragrant rice cultivars i.e., Meixiangzhan and Nongxiang 18. Pots without Mn application were served as control (Ck). Each pot contained 15 kg of soil. Effects on agronomic characters, quality attributes, 2-AP contents and enzymes involved in 2-AP biosynthesis have been studied in early and late season rice. Results depicted that Mn improved rice growth, yield and related characters, and some quality attributes significantly. It further up-regulated proline, pyrroline-5-carboxylic acid (P5C) (precursors of 2-AP), soluble proteins and activities of proline dehydrogenase (ProDH), Δ(1) pyrroline-5-carboxylic acid synthetase (P5CS) ornithine aminotransferase (OAT) that led to enhanced 2-AP production in rice grains. Moreover, higher Mn levels resulted in increased grain Mn contents in both rice cultivars. Along with growth and yield improvement, Mn application significantly improved rice aromatic contents. Overall, Nongxiang 18 accumulated more 2-AP contents than Meixiangzhan in both seasons under Mn application. This study further explored the importance of Mn in rice aroma formation and signifies that micro-nutrients can play significant roles in rice aroma synthesis; however, intensive studies at molecular levels are still needed to understand the exact mechanisms of Mn to improve rice aroma formation.<br /> (Copyright © 2016 Elsevier Masson SAS. All rights reserved.)
- Subjects :
- Ornithine-Oxo-Acid Transaminase genetics
Ornithine-Oxo-Acid Transaminase metabolism
Oryza enzymology
Oryza physiology
Plant Proteins genetics
Proline metabolism
Proline Oxidase genetics
Proline Oxidase metabolism
Seeds drug effects
Seeds enzymology
Seeds physiology
Gene Expression Regulation, Plant drug effects
Manganese pharmacology
Oryza drug effects
Plant Proteins metabolism
Pyrroles metabolism
Subjects
Details
- Language :
- English
- ISSN :
- 1873-2690
- Volume :
- 103
- Database :
- MEDLINE
- Journal :
- Plant physiology and biochemistry : PPB
- Publication Type :
- Academic Journal
- Accession number :
- 26995311
- Full Text :
- https://doi.org/10.1016/j.plaphy.2016.03.009