Plant Reproduction

A special issue of Plants (ISSN 2223-7747).

Deadline for manuscript submissions: closed (31 July 2020) | Viewed by 5469

Special Issue Editor


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Guest Editor
Appalachian Lab, University of Maryland Center of Environmental Science, 301 Braddock Road, Frostburg, MD 21532, USA
Interests: evolutionary ecology; population genetics; invasion biology

Special Issue Information

Dear Colleagues,

Research interest in Plant Reproduction dates back to the early studies of angiosperm mating systems conducted by Darwin in the 1870s. The reproductive biology of plants displays greater variety than that of most other organismic groups. In particular, flowering plants—compared to most animals—show complex forms of mating, which are characterized by their level of self- vs. cross-fertilization, the latter often with various partners simultaneously. Accordingly, angiosperms exhibit an enormous diversity of reproductive organs, where female and male sex organs can be combined and spatially and temporally arranged in multiple ways within the flower, inflorescence, and entire population. The type and efficiency of biotic or abiotic pollen dispersal vectors as well as postpollination mechanisms of partner discrimination further shape the reproductive outcome. Plant reproduction has important implications for (meta-)population demography, micro- and macroevolution, as well as community ecology.

The complexity of plant reproductive biology is reflected by the wide range of research topics addressed in its context, such as morphology of reproductive organs, nectar and scent biochemistry, flower-, breeding system, and life-history evolution, fitness consequences (female vs. male reproductive success, offspring fitness), hybridization, pollination and community ecology, plant–plant facilitative and competitive interactions or phenology. Formal mathematical theory, underlying molecular genetics and physiology as well as environmental aspects (e.g., pollination disruption under climate change) further expands the pallet of issues addressed. This Special Issue on “Plant Reproduction” in Plants welcomes primary research papers as well as reviews of the wide range of topics related to plant reproduction. It aims at providing a snapshot of contemporary plant reproductive biology with the goal of targeting novel debate and research avenues.

Dr. Susanne Lachmuth
Guest Editor

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Published Papers (1 paper)

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Research

23 pages, 11121 KiB  
Article
Temporal Distinction between Male and Female Floral Organ Development in Nicotiana tabacum cv. Xanthi (Solanaceae)
by Hongli Chang and Fengjie Sun
Plants 2020, 9(1), 127; https://doi.org/10.3390/plants9010127 - 19 Jan 2020
Cited by 4 | Viewed by 4133
Abstract
Early floral developmental investigations provide crucial evidence for phylogenetic and molecular studies of plants. The developmental and evolutionary mechanisms underlying the variations in floral organs are critical for a thorough understanding of the diversification of flowers. Ontogenetic comparisons between anthers and pistil within [...] Read more.
Early floral developmental investigations provide crucial evidence for phylogenetic and molecular studies of plants. The developmental and evolutionary mechanisms underlying the variations in floral organs are critical for a thorough understanding of the diversification of flowers. Ontogenetic comparisons between anthers and pistil within single flowers were characterized over time in Nicotiana tabacum cv. Xanthi. The ages of 42 tobacco flower or flower primordia were estimated using corolla growth analysis. Results showed that the protodermal layer in carpel primordia contributes to carpel development by both anticlinal and periclinal divisions. Periclinal divisions in the hypodermal layer of the placenta were observed around 4.8 ± 1.3 days after the formation of early carpel primordia (ECP) and ovule initiation occurred 10.0 ± 0.5 days after ECP. Meiosis in anthers and ovules began about 8.9 ± 1.1 days and 14.4 ± 1.3 days after ECP, respectively. Results showed an evident temporal distinction between megasporogenesis and microsporogenesis. Flower ages spanned a 17-day interval, starting with flower primordia containing the ECP and anther primordia to the tetrad stage of meiosis in megasporocytes and the bicellular stage in pollen grains. These results establish a solid foundation for future studies in order to identify the developmental and molecular mechanisms responsible for the mating system in tobacco. Full article
(This article belongs to the Special Issue Plant Reproduction)
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