A fertilization-independent developmental program triggers partial fruit development and senescence processes in pistils of Arabidopsis.

Plant Physiology
Pablo Carbonell-BejeranoMiguel A Perez-Amador

Abstract

The pistil is the specialized plant organ that enables appropriate pollination and ovule fertilization, after which it undergoes growth and differentiation to become a fruit. However, in most species, if ovules are not fertilized around anthesis the pistil irreversibly loses its growth capacity. We used physiological, molecular, and transcriptomic tools to characterize the post-anthesis development of the unfertilized Arabidopsis (Arabidopsis thaliana) pistil. Surprisingly, developmental processes that have been previously described in developing Arabidopsis fruits, such as the collapse of the adaxial epidermis, differentiation of a sclerenchyma layer in the adaxial subepidermis and the dehiscence zone, and valve dehiscence, were also observed in the unfertilized pistil. We determined that senescence is first established in the transmitting tract, stigma, and ovules immediately after anthesis, and that the timing of senescence in the stigma and ovules correlates with the loss of fruit-set responsiveness of the pistil to pollen and the hormone gibberellin (GA), respectively. Moreover, we showed that mutants with altered ovule development have impaired fruit-set response to the GA gibberellic acid, which further indicates that th...Continue Reading

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Citations

Oct 16, 2012·Journal of Experimental Botany·Xiaohong KouSu-Sheng Gan
Mar 5, 2013·Plant Physiology·Masanori IzumiHiroyuki Ishida
Apr 24, 2013·Plant Physiology·Mariana Sotelo-SilveiraStefan de Folter
Feb 22, 2012·PLoS Genetics·Paul H ReevesJason W Reed
Mar 25, 2014·Planta·Mariana Sotelo-SilveiraStefan de Folter
May 31, 2014·Journal of Experimental Botany·María Dolores GómezMiguel A Pérez-Amador
Jun 26, 2014·The Plant Journal : for Cell and Molecular Biology·Carolina Gallego-GiraldoMiguel A Perez-Amador
Nov 27, 2015·Developmental Cell·Francisco Vera-SireraMiguel A Blázquez
Jan 15, 2015·The Journal of Eukaryotic Microbiology·Yasuhiro FukudaRonald E Pearlman
Jan 1, 2013·Antioxidants·Marina CavaiuoloAntonio Ferrante
Jun 22, 2017·International Journal of Molecular Sciences·Xiao YangShuzhen Men
Jun 20, 2018·Development·Maria D GomezMiguel A Perez-Amador
Jul 14, 2018·The Plant Journal : for Cell and Molecular Biology·Fernando Pérez-MartínRafael Lozano
Mar 12, 2019·Journal of Experimental Botany·Sara ForlaniChiara Mizzotti
Jan 14, 2020·The Plant Journal : for Cell and Molecular Biology·Daniela Barro-TrastoyMiguel A Pérez-Amador
Nov 24, 2019·Proceedings of the National Academy of Sciences of the United States of America·Juan-José RipollAdrienne H K Roeder
May 29, 2018·Nature Plants·Maurice Bosch, Noni V E Franklin-Tong
Mar 23, 2021·Horticulture Research·Huibin WangLingfei Xu

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