Gibberellin Regulates Pollen Viability and Pollen Tube Growth in Rice

DOI

Bibliographic Information

Other Title
  • イネにおけるジベレリン欠損変異体と非感受性変異体における遺伝様式の違い

Abstract

Gibberellins (GAs) have many biological roles in higher plants. We performed genetic analysis on rice GA-related mutants, including GA-deficient and -insensitive mutants. The analysis revealed that rice GA-deficient mutations are not transmitted as Mendelian traits to the next generation following the self-pollination of F1 heterozygous plants, although GA-insensitive mutations are transmitted normally. In order to understand these differences in transmission in GA-deficient and GA-insensitive mutants, we examined the effect of GA on microsporogenesis and pollen-tube elongation in rice using new GA-deficient and -insensitive mutants that produce semi-fertile flowers. Phenotypic analysis revealed that the GA-deficient mutant, rpe1, is defective in pollen-tube elongation, resulting in a low fertilization frequency, whereas the GA-insensitive semi-dominant mutant Slr1-d3 is mainly defective in viable pollen production. We also examined the quantitative RT-PCR analysis of GA-biosynthesis and signal-related genes. Based on the observations, we will discuss the ways of transmissions of these GA-related mutations.

Journal

Details 詳細情報について

  • CRID
    1390001205632639360
  • NII Article ID
    130006994429
  • DOI
    10.14841/jspp.2008.0.0350.0
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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