Dupuis, I. and Dumas, C. (1990) Influence of temperature stress on in vitro fertilization and heat shock protein synthesis in maize (Zea mays L.) reproductive tissues. Plant Physiology, 94 (2). pp. 665-670.
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Abstract
The response of maize male (hybrid line W117) and female (hybrid line A632) reproductive tissues to temp. stress was investigated using in vitro pollination/fertilization. Pollen, spikelets, and pollinated spikelets were exposed to temp. of 4, 28, 32, 36 or 40°C for 2 to 24 h. Heat shock protein (HSP) synthesis was also analysed in these tissues. The percentage fertilization was significantly reduced when pollinated spikelets were exposed to temp. >36°. When pollen and spikelets were exposed separately to temp. stress, the female tissues appeared resistant to 4 h of cold stress (4°) or heat stress (40°). Under heat shock conditions, synthesis of a typical set of HSPs was induced in the female tissues. In contrast, the mature pollen was sensitive to heat stress and was responsible for the failure of fertilization at high temp. At the molecular level, no heat shock response was detected in the mature pollen.
| Item Type: | Article |
|---|---|
| Author Affiliation: | Reconnaissance Cellulaire et Amélioration des Plantes, Université Lyon 1, 69622 Villeurbanne, France |
| Subjects: | Plant Production Plant Physiology and Biochemistry > Plant Physiology Plant Physiology and Biochemistry > Biochemistry Environmental Science > Environment |
| Divisions: | Maize |
| Depositing User: | Sandhya Gir |
| Date Deposited: | 19 Oct 2010 08:17 |
| Last Modified: | 19 Oct 2010 08:17 |
| Official URL: | http://dx.doi.org/10.1104/pp.94.2.665 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/172 |
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