Work

Effects of a brassinosteroid and an ecdysone analogue on pollen germination of rice under heat stress

Year: 2013

Type: article

Abstract: Heat stress is associated with a reduction in pollen germination and seed setting of rice. Brassinosteroids have been reported to counteract some stresses on plant growth and development. We investigated the effects of an exogenously applied brassinosteroid, (24-epibrassinolide; EBR) and an ecdysone analogue (7,8-dihydro-8α-20-hydroxyecdysone; DHECD) against heat stress on pollen viability of rice (Oryza sativa L.) cv. Pathum Thani 1. The plants were treated with either EBR or DHECD and exposed to a day/night heat stress regime of 40/30°C for 7 days. The results demonstrated that 0.001 µM of either chemical was effective for increasing pollen viability and reducing pollen bursting. Furthermore, these chemical treatments conferred resistance to heat stress in in vivo pollen germination and seed setting. Consequently, these results suggest EBR and DHECD should alleviate the detrimental effects of heat stress by improving pollen germination and seed setting and enable rice to withstand high temperature stress.

Source: Journal of Pesticide Science

DOI: 10.1584/jpestics.d13-029

Authors: Jutiporn Thussagunpanit, Kanapol Jutamanee, Lily Kaveeta, Witith Chai-arree, Porn Pankean, Apichart Suksamrarn

Institutions: Kasetsart University, Ramkhamhaeng University

Language: English

Topic: Plant Reproductive Biology

Subfield: Molecular Biology

Field: Biochemistry, Genetics and Molecular Biology

Domain: Life Sciences

SDG: Zero hunger

Open Access status: bronze