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Fertility loss in senescing Arabidopsis ovules is controlled by the maternal sporophyte via a NAC transcription factor triad

Matthias Van Durme (UGent) , Yadira Olvera Carrillo (UGent) , Marie Pfeiffer (UGent) , Nicolas Doll (UGent) , Freya De Winter (UGent) , Zongcheng Lin (UGent) and Moritz Nowack (UGent)
(2023) PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA. 120(25).
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Abstract
Flowers have a species-specific fertile period during which pollination and fertilization have to occur to initiate seed and fruit development. Unpollinated flowers remain receptive for mere hours in some species, and up to several weeks in others before flower senescence terminates fertility. As such, floral longevity is a key trait subject to both natural selection and plant breeding. Within the flower, the life span of the ovule containing the female gametophyte is decisive for fertilization and the initiation of seed development. Here, we show that unfertilized ovules in Arabidopsis thaliana undergo a senescence program that generates morphological and molecular hallmarks of canonical programmed cell death processes in the sporophytically derived ovule integuments. Transcriptome profiling of isolated aging ovules revealed substantial transcriptomic reprogramming during ovule senescence, and identified up-regulated transcription factors as candidate regulators of these processes. Combined mutation of three most-up-regulated NAC (NAM, ATAF1/2, and CUC2) transcription factors, NAP/ANAC029, SHYG/ANAC047, and ORE1/ANAC092, caused a substantial delay in ovule senescence and an extension of fertility in Arabidopsis ovules. These results suggest that timing of ovule senescence and duration of gametophyte receptivity are subject to genetic regulation controlled by the maternal sporophyte.
Keywords
Arabidopsis, ovule, programmed cell death, senescence, female gametophyte, PROGRAMMED CELL-DEATH, LEAF SENESCENCE, SYNERGID DEGENERATION, FEMALE GAMETOPHYTE, WILD-TYPE, FERTILIZATION, ABORTION, STRESS, POLLEN, IDENTIFICATION

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Citation

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MLA
Van Durme, Matthias, et al. “Fertility Loss in Senescing Arabidopsis Ovules Is Controlled by the Maternal Sporophyte via a NAC Transcription Factor Triad.” PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, vol. 120, no. 25, 2023, doi:10.1073/pnas.2219868120.
APA
Van Durme, M., Olvera Carrillo, Y., Pfeiffer, M., Doll, N., De Winter, F., Lin, Z., & Nowack, M. (2023). Fertility loss in senescing Arabidopsis ovules is controlled by the maternal sporophyte via a NAC transcription factor triad. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 120(25). https://doi.org/10.1073/pnas.2219868120
Chicago author-date
Van Durme, Matthias, Yadira Olvera Carrillo, Marie Pfeiffer, Nicolas Doll, Freya De Winter, Zongcheng Lin, and Moritz Nowack. 2023. “Fertility Loss in Senescing Arabidopsis Ovules Is Controlled by the Maternal Sporophyte via a NAC Transcription Factor Triad.” PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 120 (25). https://doi.org/10.1073/pnas.2219868120.
Chicago author-date (all authors)
Van Durme, Matthias, Yadira Olvera Carrillo, Marie Pfeiffer, Nicolas Doll, Freya De Winter, Zongcheng Lin, and Moritz Nowack. 2023. “Fertility Loss in Senescing Arabidopsis Ovules Is Controlled by the Maternal Sporophyte via a NAC Transcription Factor Triad.” PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 120 (25). doi:10.1073/pnas.2219868120.
Vancouver
1.
Van Durme M, Olvera Carrillo Y, Pfeiffer M, Doll N, De Winter F, Lin Z, et al. Fertility loss in senescing Arabidopsis ovules is controlled by the maternal sporophyte via a NAC transcription factor triad. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA. 2023;120(25).
IEEE
[1]
M. Van Durme et al., “Fertility loss in senescing Arabidopsis ovules is controlled by the maternal sporophyte via a NAC transcription factor triad,” PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, vol. 120, no. 25, 2023.
@article{01H5HDNGSDFZH30W5WAWH879CA,
  abstract     = {{Flowers have a species-specific fertile period during which pollination and fertilization have to occur to initiate seed and fruit development. Unpollinated flowers remain receptive for mere hours in some species, and up to several weeks in others before flower senescence terminates fertility. As such, floral longevity is a key trait subject to both natural selection and plant breeding. Within the flower, the life span of the ovule containing the female gametophyte is decisive for fertilization and the initiation of seed development. Here, we show that unfertilized ovules in Arabidopsis thaliana undergo a senescence program that generates morphological and molecular hallmarks of canonical programmed cell death processes in the sporophytically derived ovule integuments. Transcriptome profiling of isolated aging ovules revealed substantial transcriptomic reprogramming during ovule senescence, and identified up-regulated transcription factors as candidate regulators of these processes. Combined mutation of three most-up-regulated NAC (NAM, ATAF1/2, and CUC2) transcription factors, NAP/ANAC029, SHYG/ANAC047, and ORE1/ANAC092, caused a substantial delay in ovule senescence and an extension of fertility in Arabidopsis ovules. These results suggest that timing of ovule senescence and duration of gametophyte receptivity are subject to genetic regulation controlled by the maternal sporophyte.}},
  articleno    = {{e2219868120}},
  author       = {{Van Durme, Matthias and Olvera Carrillo, Yadira and Pfeiffer, Marie and Doll, Nicolas and De Winter, Freya and Lin, Zongcheng and Nowack, Moritz}},
  issn         = {{0027-8424}},
  journal      = {{PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA}},
  keywords     = {{Arabidopsis,ovule,programmed cell death,senescence,female gametophyte,PROGRAMMED CELL-DEATH,LEAF SENESCENCE,SYNERGID DEGENERATION,FEMALE GAMETOPHYTE,WILD-TYPE,FERTILIZATION,ABORTION,STRESS,POLLEN,IDENTIFICATION}},
  language     = {{eng}},
  number       = {{25}},
  pages        = {{11}},
  title        = {{Fertility loss in senescing Arabidopsis ovules is controlled by the maternal sporophyte via a NAC transcription factor triad}},
  url          = {{http://doi.org/10.1073/pnas.2219868120}},
  volume       = {{120}},
  year         = {{2023}},
}
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