The AUXIN RESPONSE FACTOR 2 gene of Arabidopsis links auxin signalling, cell division, and the size of seeds and other organs.

@article{Schruff2006TheAR,
  title={The AUXIN RESPONSE FACTOR 2 gene of Arabidopsis links auxin signalling, cell division, and the size of seeds and other organs.},
  author={Marie C Schruff and Melissa Spielman and Sushma Tiwari and Sally Adams and Nick Fenby and Rod J. Scott},
  journal={Development},
  year={2006},
  volume={133 2},
  pages={251-61}
}
Control of seed size involves complex interactions among the zygotic embryo and endosperm, the maternally derived seed coat, and the parent plant. Here we describe a mutant in Arabidopsis, megaintegumenta (mnt), in which seed size and weight are dramatically increased. One factor in this is extra cell division in the integuments surrounding mnt mutant ovules, leading to the formation of enlarged seed coats. Unusually for integument mutants, mnt does not impair female fertility. The mnt lesion… CONTINUE READING
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