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Ziemmer JK, Dos Reis de Oliveira T, Santa-Catarina C, do Nascimento Vieira L, Goldenberg R, Pacheco de Freitas Fraga H. Plant regeneration capacity in seeds of three species of Miconia (Melastomataceae) may be related to endogenous polyamine profiles. PROTOPLASMA 2024; 261:937-950. [PMID: 38530427 DOI: 10.1007/s00709-024-01945-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Accepted: 03/16/2024] [Indexed: 03/28/2024]
Abstract
In plant tissue culture, differences in endogenous levels of species-specific plant growth regulators (PGRs) may explain differences in regenerative capacity. In the case of polyamines (PAs), their dynamics and distribution may vary between species, genotypes, tissues, and developmental pathways, such as sexual reproduction and apomixis. In this study, for the first time, we aimed to assess the impact of varying endogenous PAs levels in seeds from distinct reproductive modes in Miconia spp. (Melastomataceae), on their in vitro regenerative capacity. We quantified the free PAs endogenous content in seeds of Miconia australis (obligate apomictic), Miconia hyemalis (facultative apomictic), and Miconia sellowiana (sexual) and evaluated their in vitro regenerative potential in WPM culture medium supplemented with a combination of 2,4-dichlorophenoxyacetic acid (2,4-D) and 6-benzylaminopurine (BAP). The morphogenic responses were characterized by light microscopy and scanning electron microscopy and discussed regarding the endogenous PAs profiles found. Seeds of M. sellowiana presented approximately eight times more putrescine than M. australis, which was associated with a higher percentage of regenerated calluses (76.67%) than M. australis (5.56%). On the other hand, spermine levels were significantly higher in M. australis. Spermine is indicated as an inhibitor of auxin-carrying gene expression, which may have contributed to its lower regenerative capacity under the tested conditions. These findings provide important insights into in vitro morphogenesis mechanisms in Miconia and highlight the significance of endogenous PA levels in plant regeneration. These discoveries can potentially optimize future regeneration protocols in Miconia, a plant group still underexplored in this area.
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Affiliation(s)
- Juliana Klostermann Ziemmer
- Programa de Pós-Graduação em Biologia Vegetal, Campinas, Universidade Estadual de Campinas, São Paulo, 13083-862, Brazil.
| | - Tadeu Dos Reis de Oliveira
- Laboratório de Biologia Celular e Tecidual, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, Rio de Janeiro, 28013-602, Brazil
| | - Claudete Santa-Catarina
- Laboratório de Biologia Celular e Tecidual, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, Rio de Janeiro, 28013-602, Brazil
| | | | - Renato Goldenberg
- Departamento de Botânica, Universidade Federal do Paraná, Curitiba, Paraná, 81531-970, Brazil
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Liu DD, Wang DR, Yang XY, Zhao CH, Li SH, Sha GL, Zhang RF, Ge HJ, Tong XS, You CX. Apomictic Malus plants exhibit abnormal pollen development. FRONTIERS IN PLANT SCIENCE 2023; 14:1065032. [PMID: 36890893 PMCID: PMC9986266 DOI: 10.3389/fpls.2023.1065032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Accepted: 01/30/2023] [Indexed: 06/18/2023]
Abstract
Apomixis is the asexual reproduction through seeds that leads to the production of genetically uniform progeny. It has become an important tool in plant breeding because it facilitates the retention of genotypes with desirable traits and allows seeds to be obtained directly from mother plants. Apomixis is rare in most economically important crops, but it occurs in some Malus species. Here, the apomictic characteristics of Malus were examined using four apomictic and two sexually reproducing Malus plants. Results from transcriptome analysis showed that plant hormone signal transduction was the main factor affecting apomictic reproductive development. Four of the apomictic Malus plants examined were triploid, and pollen was either absent or present in very low densities in the stamen. Variation in the presence of pollen was associated with variation in the apomictic percentage; specifically, pollen was absent in the stamens of tea crabapple plants with the highest apomictic percentage. Furthermore, pollen mother cells failed to progress normally into meiosis and pollen mitosis, a trait mostly observed in apomictic Malus plants. The expression levels of meiosis-related genes were upregulated in apomictic plants. Our findings indicate that our simple method of detecting pollen abortion could be used to identify apple plants that are capable of apomictic reproduction.
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Affiliation(s)
- Dan-Dan Liu
- College of Agriculture, Yunnan University, Kunming, Yunnan, China
| | - Da-Ru Wang
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, China
| | - Xuan-Yu Yang
- College of Agriculture, Yunnan University, Kunming, Yunnan, China
| | - Chang-Hui Zhao
- College of Agriculture, Yunnan University, Kunming, Yunnan, China
| | - Shao-Hua Li
- College of Agriculture, Yunnan University, Kunming, Yunnan, China
| | - Guang-Li Sha
- Qingdao Academy of Agricultural Sciences, Qingdao, Shandong, China
| | - Rui-Fen Zhang
- Qingdao Academy of Agricultural Sciences, Qingdao, Shandong, China
| | - Hong-Juan Ge
- Qingdao Academy of Agricultural Sciences, Qingdao, Shandong, China
| | - Xian-Song Tong
- Fu-ning Popularizing Agricultural Techniques Center, Fu-ning, Yunnan, China
| | - Chun-Xiang You
- National Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong, China
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3
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Pacifico R, Almeda F, Penneys DS, Fidanza K. Systematics of the Trembleya sensu stricto clade of Microlicia (Melastomataceae, Lavoisiereae). PHYTOKEYS 2022; 216:1-101. [PMID: 36761893 PMCID: PMC9836420 DOI: 10.3897/phytokeys.216.91032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 10/25/2022] [Indexed: 06/18/2023]
Abstract
A systematic monograph of the Trembleya s.s. clade is presented, a Brazilian endemic lineage of Melastomataceae comprising 11 species and currently recognised as part of Microlicia s.l. (Melastomataceae). First, we investigate phylogenetic relationships within Lavoisiereae using two nuclear markers and two sampling datasets (102 and 134 terminals). Then, we provide a systematic revision and new circumscription of the Trembleya s.s. clade, including line drawings, photos of living specimens, leaves and floral parts, distribution maps, a key to the 11 accepted species, comments on morphology, reproductive biology, richness, endemism, biogeography and recommended conservation assessments. A nomenclatural update of all taxa previously treated in Trembleya is also provided, including the designation of 45 lectotypes and the proposal of 38 new synonyms.
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Affiliation(s)
- Ricardo Pacifico
- Universidade Estadual de Maringá, Programa de Pós-Graduação em Biologia Comparada. Av. Colombo, 5790, 87020-900 Maringá, Paraná, Brazil
- California Academy of Sciences, Institute for Biodiversity Science and Sustainability, Department of Botany, 55 Music Concourse Drive, Golden Gate Park, San Francisco, California 94118-4503, USA
| | - Frank Almeda
- California Academy of Sciences, Institute for Biodiversity Science and Sustainability, Department of Botany, 55 Music Concourse Drive, Golden Gate Park, San Francisco, California 94118-4503, USA
| | - Darin S. Penneys
- Department of Biology and Marine Biology, University of North Carolina Wilmington, Wilmington, North Carolina 28403, USA
| | - Karina Fidanza
- Universidade Estadual de Maringá, Programa de Pós-Graduação em Biologia Comparada. Av. Colombo, 5790, 87020-900 Maringá, Paraná, Brazil
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4
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Silva DM, Luna ALL, Souza CS, Nunes YRF, Fonseca RS, Azevedo IFPD. Sexual and reproductive systems of woody species in
vereda
are distributed according to the life form and habitat occurrence. AUSTRAL ECOL 2022. [DOI: 10.1111/aec.13235] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Danila Moreira Silva
- Programa de Pós‐Graduação em Botânica Aplicada Universidade Estadual de Montes Claros Avenida Dr. Ruy Braga, S/N – Bairro Vila Mauricéia Montes Claros 39401‐089 Brazil
| | - Andressa Laís Lacerda Luna
- Programa de Pós‐Graduação em Botânica Aplicada Universidade Estadual de Montes Claros Avenida Dr. Ruy Braga, S/N – Bairro Vila Mauricéia Montes Claros 39401‐089 Brazil
| | - Camila Silveira Souza
- Programa de Pós‐Graduação em Botânica Aplicada Universidade Estadual de Montes Claros Avenida Dr. Ruy Braga, S/N – Bairro Vila Mauricéia Montes Claros 39401‐089 Brazil
- Laboratório de Ecologia Vegetal, Departamento de Biologia Geral Universidade Estadual de Montes Claros Montes Claros Brazil
| | - Yule Roberta Ferreira Nunes
- Programa de Pós‐Graduação em Botânica Aplicada Universidade Estadual de Montes Claros Avenida Dr. Ruy Braga, S/N – Bairro Vila Mauricéia Montes Claros 39401‐089 Brazil
- Laboratório de Ecologia Vegetal, Departamento de Biologia Geral Universidade Estadual de Montes Claros Montes Claros Brazil
| | - Rúbia Santos Fonseca
- Instituto de Ciências Agrárias Universidade Federal de Minas Gerais, Bairro Universitário Montes Claros Brazil
| | - Islaine Franciely Pinheiro de Azevedo
- Programa de Pós‐Graduação em Botânica Aplicada Universidade Estadual de Montes Claros Avenida Dr. Ruy Braga, S/N – Bairro Vila Mauricéia Montes Claros 39401‐089 Brazil
- Laboratório de Ecologia Vegetal, Departamento de Biologia Geral Universidade Estadual de Montes Claros Montes Claros Brazil
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Dellinger AS, Artuso S, Fernández-Fernández DM, Schönenberger J. Stamen dimorphism in bird-pollinated flowers: Investigating alternative hypotheses on the evolution of heteranthery. Evolution 2021; 75:2589-2599. [PMID: 33963764 DOI: 10.1111/evo.14260] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 04/19/2021] [Accepted: 04/27/2021] [Indexed: 01/09/2023]
Abstract
Heteranthery, the presence of distinct stamen types within a flower, is commonly explained as functional adaptation to alleviate the "pollen dilemma," defined as the dual and conflicting function of pollen as pollinator food resource and male reproductive agent. A single primary hypothesis, "division of labor," has been central in studies on heteranthery. This hypothesis postulates that one stamen type functions in rewarding pollen-collecting pollinators and the other in reproduction, thereby minimizing pollen loss. Only recently, alternative functions (i.e., staggered pollen release), were proposed, but comparative and experimental investigations are lagging behind. Here, we used 63 species of the tribe Merianieae (Melastomataceae) to demonstrate that, against theory, heteranthery occurs in flowers offering rewards other than pollen, such as staminal food bodies or nectar. Although shifts in reward type released species from the "pollen dilemma," heteranthery has evolved repeatedly de novo in food-body-rewarding, passerine-pollinated flowers. We used field investigations to show that foraging passerines discriminated between stamen types and removed large stamens more quickly than small stamens. Passerines removed small stamens on separate visits towards the end of flower anthesis. We propose that the staggered increase in nutritive content of small stamens functions to increase chances for outcross-pollen transfer.
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Affiliation(s)
| | - Silvia Artuso
- Department of Biosciences, University of Salzburg, Salzburg, Austria
| | | | - Jürg Schönenberger
- Department of Botany and Biodiversity Research, University of Vienna, Vienna, Austria
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6
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Conceição SIR, Fernandes J, Borges da Silva E, Caperta AD. Reproductive Output and Insect Behavior in Hybrids and Apomicts from Limonium ovalifolium and L. binervosum Complexes (Plumbaginaceae) in an Open Cross-Pollination Experiment. PLANTS 2021; 10:plants10010169. [PMID: 33477277 PMCID: PMC7830651 DOI: 10.3390/plants10010169] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 01/08/2021] [Accepted: 01/11/2021] [Indexed: 11/21/2022]
Abstract
Ex situ plant collections established from seeds of natural populations are key tools for understanding mating systems of intricate taxonomic complexes, as in the Limonium Mill. genus (sea lavenders, Plumbaginaceae). Plants show a polymorphic sexual system associated to flower polymorphisms such as ancillary pollen and stigma and/or heterostyly that prevents self and intramorph mating. The main objectives of this study were to investigate the significance of pollen-stigma dimorphisms and the role of flower visitors in the reproductive output of hybrids arising from sexual diploids of Limonium ovalifolium complex and apomicts tetraploids of L. binervosum complex in an open cross-pollination experiment. Results showed that, similarly to parental plants, hybrids present inflorescence types, self-incompatible flowers, and produced regular pollen grains with the typical exine patterns, with medium to high viability. By contrast, apomicts show floral polymorphisms, inflorescences, and pollen grains of maternal phenotype but with low stainability. Several insects’ species visited the inflorescences of parental plants and both hybrids and apomicts and some of these insects carried A and/or B pollen grains on their bodies, especially Clepsis coriacana (Rebel) and Tapinoma sp. Insects’ floral visits to hybrids and apomicts seem to be independent of pollen fertility and plants’ reproductive modes. Both hybrids and apomicts were able to produce fertile seeds, although the latter showed more seedlings with developmental anomalies than the first plants. The findings demonstrate that there is a weak reproductive barrier between the diploid species of L. ovalifolium complex as they can hybridize and produce fertile hybrids, provided there is pollen transport by pollinator insects. This study supports that apomixis is a strong reproductive barrier between both L. ovalifolium and L. binervosum complexes but did not allow us to exclude reproductive interferences of apomict pollen into sexuals.
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Affiliation(s)
- Sofia I. R. Conceição
- Linking Landscape, Environment, Agriculture and Food (LEAF), Instituto Superior de Agronomia (ISA), Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal; (S.I.R.C.); (J.F.)
| | - Joana Fernandes
- Linking Landscape, Environment, Agriculture and Food (LEAF), Instituto Superior de Agronomia (ISA), Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal; (S.I.R.C.); (J.F.)
| | - Elsa Borges da Silva
- Forest Research Centre (CEF), Instituto Superior de Agronomia (ISA), Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal;
| | - Ana D. Caperta
- Linking Landscape, Environment, Agriculture and Food (LEAF), Instituto Superior de Agronomia (ISA), Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal; (S.I.R.C.); (J.F.)
- Correspondence:
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7
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Telles FJ, Klunk CL, Maia FRD, de Brito VLG, Varassin IG. Towards a new understanding of the division of labour in heterantherous flowers: the case of Pterolepis glomerata (Melastomataceae). Biol J Linn Soc Lond 2020. [DOI: 10.1093/biolinnean/blaa107] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Abstract
Pollen-flowers with heteromorphic stamens have been shown to promote an intrafloral division of labour as a solution to fitness costs arising from pollen consumption by bees, known as the pollen dilemma. Usually, the division is based on morphological differences in anther and pollen traits that correlate with stamen function: pollinating anthers are larger and contain more and higher-quality pollen grains than feeding anthers. Here, we present a new strategy based on a high investment in reward production and thus attraction, in the heterantherous Pterolepis glomerata, to overcome short flower longevity and maintain reproductive success. In P. glomerata small feeding anthers not only produced more pollen grains and more grains with cytoplasmic content, but also released more pollen than pollinating anthers after a single visit. This pattern was consistent until the end of floral anthesis, showing the existence of pollen-dosing mechanisms. Bees equally visited flowers with yellow feeding anthers and pollinating anthers with yellow connective appendages, indicating a visual similarity, as predicted by bee vision modelling. Our results demonstrate that the division of labour might have different outcomes. Instead of the classical expectation of more investment in reproductive pollen in pollinating stamens, P. glomerata invested more in attraction and reward in feeding stamens.
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Affiliation(s)
- Francismeire Jane Telles
- Programa de Pós-Graduação em Ecologia e Conservação de Recursos Naturais, Universidade Federal de Uberlândia, Campus Umuarama, Sala, Uberlândia, MG, Brazil
- Programa de Pós-Graduação em Ecologia e Conservação, Centro Politécnico, Universidade Federal do Paraná, Curitiba, Paraná, Brazil
| | - Cristian Luan Klunk
- Programa de Pós-Graduação em Ecologia e Conservação, Centro Politécnico, Universidade Federal do Paraná, Curitiba, Paraná, Brazil
| | - Fabiano Rodrigo da Maia
- Programa de Pós-Graduação em Botânica, Centro Politécnico, Universidade Federal do Paraná, Curitiba, Paraná, Brazil
| | | | - Isabela Galarda Varassin
- Departamento de Botânica, Centro Politécnico, Universidade Federal do Paraná, Curitiba, PR, Brazil
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8
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Fei X, Shi J, Liu Y, Niu J, Wei A. The steps from sexual reproduction to apomixis. PLANTA 2019; 249:1715-1730. [PMID: 30963237 DOI: 10.1007/s00425-019-03113-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 02/18/2019] [Indexed: 05/03/2023]
Abstract
In this paper, an interaction model of apomixis-related genes was constructed to analyze the emergence of apomictic types. It is speculated that apomixis technology will be first implemented in gramineous plants. Apomixis (asexual seed formation) is a phenomenon in which a plant bypasses the most fundamental aspects of sexual reproduction-meiosis and fertilization-to form a viable seed. Plants can form seeds without fertilization, and the seed genotype is consistent with the female parent. The development of apomictic technology would be revolutionary for agriculture and for food production as it would reduce costs and breeding times and also avoid many complications typical of sexual reproduction (e.g. incompatibility barriers) and of vegetative propagation (e.g. viral transfer). The application of apomictic reproductive technology has the potential to revolutionize crop breeding. This article reviews recent advances in apomixis in cytology and molecular biology. The general idea of identifying apomixis was proposed and the process of the emergence of non-fusion types was discussed. To better understand the apomixis mechanism, an apomixis regulatory model was established. At the same time, the realization of apomixis technology is proposed, which provides reference for the research and application of apomixis.
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Affiliation(s)
- Xitong Fei
- College of Forestry, Northwest A&F University, Yangling, Shaanxi, China
| | - Jingwei Shi
- College of Forestry, Northwest A&F University, Yangling, Shaanxi, China
| | - Yulin Liu
- College of Forestry, Northwest A&F University, Yangling, Shaanxi, China
| | - Jinshuang Niu
- College of Forestry, Northwest A&F University, Yangling, Shaanxi, China
| | - Anzhi Wei
- College of Forestry, Northwest A&F University, Yangling, Shaanxi, China.
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9
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Dias ACC, Serra AC, Sampaio DS, Borba EL, Bonetti AM, Oliveira PE. Unexpectedly high genetic diversity and divergence among populations of the apomictic Neotropical tree Miconia albicans. PLANT BIOLOGY (STUTTGART, GERMANY) 2018; 20:244-251. [PMID: 29069536 DOI: 10.1111/plb.12654] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2017] [Accepted: 10/20/2017] [Indexed: 06/07/2023]
Abstract
Since tropical trees often have long generation times and relatively small reproductive populations, breeding systems and genetic variation are important for population viability and have consequences for conservation. Miconia albicans is an obligate, diplosporous, apomictic species widespread in the Brazilian Cerrado, the savanna areas in central Brazil and elsewhere in the Neotropics. The genetic variability would be, theoretically, low within these male-sterile and possibly clonal populations, although some variation would be expected due to recombination during restitutional meiosis. We used ISSR markers to assess genetic diversity of M. albicans and to compare with other tropical trees, including invasive species of Melastomataceae. A total of 120 individuals from six populations were analysed using ten ISSR primers, which produced 153 fully reproducible fragments. The populations of M. albicans presented mean Shannon's information index (I) of 0.244 and expected heterozygosity (He ) of 0.168. Only two pairs of apparently clonal trees were identified, and genetic diversity was relatively high. A hierarchical amova for all ISSR datasets showed that 74% of the variance was found among populations, while only 26% of the variance was found within populations of this species. Multivariate and Bayesian analyses indicated marked separation between the studied populations. The genetic diversity generated by restitutional meiosis, polyploidy and possibly other genome changes may explain the morpho-physiological plasticity and the ability of these plants to differentiate and occupy such a wide territory and different environmental conditions. Producing enormous amounts of bird-dispersed fruits, M. albicans possess weedy potential that may rival other Melastomataceae alien invaders.
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Affiliation(s)
- A C C Dias
- Universidade Federal de Uberlândia, Instituto de Genética e Bioquímica, Uberlândia, Brazil
| | - A C Serra
- Universidade Federal de Uberlândia, Instituto de Biologia, Uberlândia, Brazil
| | - D S Sampaio
- Universidade Federal de Uberlândia, Instituto de Biologia, Uberlândia, Brazil
| | - E L Borba
- Departamento Botânica, Universidade Federal de Minas Gerais, Instituto de Ciências Biológicas, Belo Horizonte, Minas Gerais, Brazil
| | - A M Bonetti
- Universidade Federal de Uberlândia, Instituto de Genética e Bioquímica, Uberlândia, Brazil
| | - P E Oliveira
- Universidade Federal de Uberlândia, Instituto de Biologia, Uberlândia, Brazil
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10
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Gaafar RM, El Shanshoury AR, El Hisseiwy AA, AbdAlhak MA, Omar AF, Abd El Wahab MM, Nofal RS. Induction of apomixis and fixation of heterosis in Egyptian rice Hybrid1 line using colchicine mutagenesis. ANNALS OF AGRICULTURAL SCIENCES 2017; 62:51-60. [DOI: 10.1016/j.aoas.2017.03.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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11
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Brito VLG, Fendrich TG, Smidt EC, Varassin IG, Goldenberg R. Shifts from specialised to generalised pollination systems in Miconieae (Melastomataceae) and their relation with anther morphology and seed number. PLANT BIOLOGY (STUTTGART, GERMANY) 2016; 18:585-593. [PMID: 26789333 DOI: 10.1111/plb.12432] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Accepted: 01/12/2016] [Indexed: 06/05/2023]
Abstract
Most species in Melastomataceae have poricidal anthers related to specialised bee buzz-pollination, while some have anthers with large openings associated to non-bee pollination systems. We tracked the evolution of anther morphology and seed number on the Miconieae phylogenetic tree to understand the evolutionary shifts in such pollination systems. Anther morphometric data and seed number were recorded for 54 taxa. Pollinators (bees, flies, wasps) were recorded for 20 available species. Ancestral state reconstruction was made using Maximum Likelihood from nrITS sequences. We used phylogenetic eigenvector regressions to estimate phylogenetic signal and the adaptive component for these traits. Species pollinated by bees or bees and wasps tend to have smaller pores and fruits with more seeds. Species pollinated by flies or flies and bees and/or wasps tend to have larger pores and fruits with less seeds. Independent evolution occurred three times for anthers with large pores and twice for fruits with few seeds. We detected a phylogenetic signal in both traits, and negative correlated evolution between them. In actinomorphic small-flowered Miconieae, changes in anther morphology can be related to generalisation in the pollination system incorporating flies and wasps as pollinators and lessening the importance of buzzing bees in such process. Differences in pollen removal and deposition may explain differences in anther morphology and seed number in Miconieae.
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Affiliation(s)
- V L G Brito
- Programa de Pós-Graduação em Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, São Paulo, Brazil
- Programa de Pós-Graduação em Biologia Vegetal, Instituto de Biologia, Universidade Federal de Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - T G Fendrich
- Programa de Pós-Graduação em Botânica, Universidade Federal do Paraná, Centro Politécnico, Curitiba, Paraná, Brazil
| | - E C Smidt
- Departamento de Botânica, Universidade Federal do Paraná, Centro Politécnico, Curitiba, Paraná, Brazil
| | - I G Varassin
- Departamento de Botânica, Universidade Federal do Paraná, Centro Politécnico, Curitiba, Paraná, Brazil
| | - R Goldenberg
- Departamento de Botânica, Universidade Federal do Paraná, Centro Politécnico, Curitiba, Paraná, Brazil
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12
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Dafni A, Vereecken NJ. Pollination biology from micro-morphological adaptations to community ecology of plant-pollinator interactions. PLANT BIOLOGY (STUTTGART, GERMANY) 2016; 18:3-8. [PMID: 26768999 DOI: 10.1111/plb.12411] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
- A Dafni
- Department of Evolutionary and Environmental Biology, Institute of Evolution, Haifa University, Haifa, Israel.
| | - N J Vereecken
- Agroecology & Pollination Group, Landscape Ecology & Plant Production Systems, Interfaculty School of Bioengineering, Université Libre de Bruxelles (ULB), Boulevard du Triomphe CP 264/2, B-1050, Brussels, Belgium
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