Salt-stress-induced proline accumulation in germinating embryos: Evidence suggesting a role of proline in seed germination

被引：56

作者：

Thakur, M ^{[1
]}

Sharma, AD ^{[1
]}

机构：

[1] Lyallpur Khalsa Coll, Dept Biotechnol, Jallandhar 144001, Punjab, India

来源：

JOURNAL OF ARID ENVIRONMENTS | 2005年 / 62卷 / 03期

关键词：

germination; proline; sorghum;

D O I：

10.1016/j.jaridenv.2005.01.005

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

The variability in proline content was studied with an objective to find out its physiological role in embryo germination in response to salt stress and phytohormone abscisic acid (ABA). In comparison with control, germination decreased markedly under NaCl and ABA treatments. The percentage decrease of germination under NaCl (35%) was more than ABA (65%). Subsequently, a significant increase in proline content was observed after both treatments. The relative increase in proline content was more under salt stress (703%) than ABA (301%). There was strong negative correlation (R-2 = -0.88) between germination capacity and increase in proline content. Based upon these results, a possible physiological role of proline in sorghum embryos is discussed. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：517 / 523

页数：7

共 19 条

[1] RAPID DETERMINATION OF FREE PROLINE FOR WATER-STRESS STUDIES [J].

BATES, LS ;

WALDREN, RP ;

TEARE, ID .

PLANT AND SOIL, 1973, 39 (01) :205-207

[2] CHARACTERISTICS OF THE INDUCTION OF THE ACCUMULATION OF PROLINE BY ABSCISIC-ACID AND ISOBUTYRIC ACID IN DETACHED RICE LEAVES [J].

CHOU, IT ;

CHEN, CT ;

KAO, CH .

PLANT AND CELL PHYSIOLOGY, 1991, 32 (02) :269-272

[3]

FLORES A, 1998, J PLANT PHYSL, V132, P362

[4] Changes in germination, growth and soluble sugar contents of Sorghum bicolor (L.) Moench seeds under various abiotic stresses [J].

Gill, PK ;

Sharma, AD ;

Singh, P ;

Bhullar, SS .

PLANT GROWTH REGULATION, 2003, 40 (02) :157-162

[5] The effect of polyethylene glycol on proline accumulation in rice leaves [J].

Hsu, SY ;

Hsu, YT ;

Kao, CH .

BIOLOGIA PLANTARUM, 2003, 46 (01) :73-78

[6]

Hyun Do Yoon, 2003, Journal of Plant Biotechnology, V5, P43

[7] Proline induces the expression of salt-stress-responsive proteins and may improve the adaptation of Pancratium maritimum L. to salt-stress [J].

Khedr, AHA ;

Abbas, MA ;

Wahid, AAA ;

Quick, WP ;

Abogadallah, GM .

JOURNAL OF EXPERIMENTAL BOTANY, 2003, 54 (392) :2553-2562

[8]

LOWRY OH, 1951, J BIOL CHEM, V193, P265

[9]

NAVARIIZZO F, 1990, PLANT PHYSIOL BIOCH, V28, P531

[10] PROLINE ACCUMULATION IN MAIZE (ZEA-MAYS L) PRIMARY ROOTS AT LOW WATER POTENTIALS .1. REQUIREMENT FOR INCREASED LEVELS OF ABSCISIC-ACID [J].

OBER, ES ;

SHARP, RE .

PLANT PHYSIOLOGY, 1994, 105 (03) :981-987

← 1 2 →