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Hormonal Signaling in the Progamic Phase of Fertilization in Plants

1
All-Russia Research Institute of Agricultural Biotechnology, Timiryazevskaya 42, 127434 Moscow, Russia
2
Department of Biotechnology, Institute of Agrobiotechnology, Russian State Agrarian University—Moscow Timiryazev Agricultural Academy, Timiryazevskaya 49, 127434 Moscow, Russia
3
K. A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya 35, 127276 Moscow, Russia
*
Authors to whom correspondence should be addressed.
Academic Editor: Jiafu Jiang
Horticulturae 2022, 8(5), 365; https://doi.org/10.3390/horticulturae8050365
Received: 4 March 2022 / Revised: 15 April 2022 / Accepted: 19 April 2022 / Published: 21 April 2022
Pollen–pistil interaction is a basic process in the reproductive biology of flowering plants and has been the subject of intense fundamental research that has a pronounced practical value. The phytohormones ethylene (ET) and cytokinin (CK) together with other hormones such as auxin, gibberellin (GA), jasmonic acid (JA), abscisic acid (ABA), and brassinosteroids (BRs) influence different stages of plant development and growth. Here, we mainly focus on the information about the ET and CK signaling in the progamic phase of fertilization. This signaling occurs during male gametophyte development, including tapetum (TAP) cell death, and pollen tube growth, including synergid programmed cell death (PCD) and self-incompatibility (SI)-induced PCD. ET joins the coordination of successive events in the developing anther, including the TAP development and cell death, anther dehiscence, microspore development, pollen grain maturation, and dehydration. Both ET and CK take part in the regulation of pollen–pistil interaction. ET signaling accompanies adhesion, hydration, and germination of pollen grains in the stigma and growth of pollen tubes in style tissues. Thus, ET production may be implicated in the pollination signaling between organs accumulated in the stigma and transmitted to the style and ovary to ensure successful pollination. Some data suggest that ET and CK signaling are involved in S-RNase-based SI. View Full-Text
Keywords: male gametophyte development; pollen–pistil interaction; self-incompatibility (SI); SI-induced programmed cell death (PCD); ethylene (ET); cytokinin (CK) male gametophyte development; pollen–pistil interaction; self-incompatibility (SI); SI-induced programmed cell death (PCD); ethylene (ET); cytokinin (CK)
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MDPI and ACS Style

Zakharova, E.V.; Khaliluev, M.R.; Kovaleva, L.V. Hormonal Signaling in the Progamic Phase of Fertilization in Plants. Horticulturae 2022, 8, 365. https://doi.org/10.3390/horticulturae8050365

AMA Style

Zakharova EV, Khaliluev MR, Kovaleva LV. Hormonal Signaling in the Progamic Phase of Fertilization in Plants. Horticulturae. 2022; 8(5):365. https://doi.org/10.3390/horticulturae8050365

Chicago/Turabian Style

Zakharova, Ekaterina V., Marat R. Khaliluev, and Lidia V. Kovaleva. 2022. "Hormonal Signaling in the Progamic Phase of Fertilization in Plants" Horticulturae 8, no. 5: 365. https://doi.org/10.3390/horticulturae8050365

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