Host: The Japanese Society of Plant Physiologists
Pages 0235
In Arabidopsis, a petal primordium is formed and developed between sepal and stamen primordia. The identity and initiation of primordial development of the petal have been studied genetically. However, the process of petal maturation is not genetically explored yet. To understand the maturation process of petal development, we analyzed an Arabidopsis mutant folded petals2 (fop2) which had wrinkled petals. The wrinkle in the petal of fop2 was observed only after a petal primordium contacted sepal and stamen primordia. When a sepal was removed before this stage, a petal did not wrinkle. There were no obvious difference in size and shape between mature petals in fop2 and wild type, when the wrinkle was smoothed. These suggest extension of the petal is blocked by sepal and stamen primordia in fop2. FOP2 encodes ABC transporter family protein. We would like to discuss how FOP2 affects the petal maturation process.
