Article
Plant Sciences
Dong-Rui Kong, Melanie Schori, Lu Li, Yan Luo, De-Chang Hu
Summary: This study investigates the anther and ovule developmental characters of Pittosporopsis and compares them with other members of Metteniusaceae and Icacinaceae. The study provides new insights into the morphological synapomorphies of Metteniusaceae and the embryology of early diverging campanulid clades.
Article
Plant Sciences
Diva M. A. Dusi, Elizangela R. Alves, Glaucia B. Cabral, Luciane V. Mello, Daniel J. Rigden, Erica D. Silveira, Marcio Alves-Ferreira, Larissa A. Guimaraes, Ana Cristina M. M. Gomes, Julio C. M. Rodrigues, Vera T. C. Carneiro
Summary: The study reveals the expression and localization of an exonuclease V homologue in apomictic Brachiaria brizantha, which plays a crucial role in the differentiation of nucellar cells to give rise to unreduced gametophytes.
Article
Plant Sciences
Marina D. Judkevich, Roberto M. Salas, Ana M. Gonzalez
Summary: This study reveals the structural and functional differences of the gynoecium in different breeding systems within the Gardenieae complex (Rubiaceae) and describes a new type of ovule for the family. The findings show that dioecious species in these tribes originated from homothallic species and retained some characteristics of perfect flowers.
Article
Horticulture
Sladana Jankovic, Jelena Stankovic, Dragan Jankovic, Dragan Milatovic
Summary: The study focused on the morphological characteristics of female flowers and their parts in six walnut genotypes, observing correlations between different traits and identifying patterns in their developmental processes. The research findings provide insights into the dynamics and relationships of female flower morphogenesis in walnut genotypes.
SCIENTIA HORTICULTURAE
(2021)
Article
Biochemistry & Molecular Biology
Luciana G. Ferreira, Diva M. A. Dusi, Andre S. T. Irsigler, Ana C. M. M. Gomes, Lilian H. Florentino, Marta A. Mendes, Lucia Colombo, Vera T. C. Carneiro
Summary: In this study, the researchers investigated the involvement of the IPT9 gene in ovule development in sexual and apomictic Brachiaria plants. They found that BbrizIPT9 was expressed at higher levels in sexual plants compared to apomictic plants. Knockout of the IPT9 gene in Arabidopsis resulted in the differentiation of extra megaspore mother cell-like cells.
MOLECULAR BIOLOGY REPORTS
(2023)
Article
Plant Sciences
Andrey S. Ryabchenko, Galina L. Kolomeitseva, Alexander V. Babosha, Vladimir A. Koval
Summary: In this study, Megasporogenesis, megagametogenesis and embryogenesis of Liparis elliptica were investigated. It was found that the embryo sac of L. elliptica is monosporic and develops from the chalazal cell of the megaspore triad. L. elliptica has a unique feature of unitegmal ovule, and the seed coat is formed by an outer layer of the single internal integument, which is a rare characteristic among epiphytic orchid species with photosynthetic leaves.
Article
Plant Sciences
Jorge Lora, Andres Garcia-Lor, Pablo Aleza
Summary: Seedlessness is a crucial agronomic trait in mandarins, and creating triploid plants is an important strategy for developing new seedless citrus varieties. However, little is known about the key steps of pollen development in polyploids. A study was conducted to investigate the effect of ploidy level on pollen development in diploid and tetraploid genotypes. The findings revealed significant differences in cell area, shape, starch hydrolysis, and carbohydrate accumulation during microgametogenesis, which resulted in the infertility of pollen grains in tetraploid Clemenules clementine. This poses challenges in using tetraploid genotypes as male parents for hybridization in order to produce large progenies of triploid hybrids.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Emilia Brzezicka, Malgorzata Kozieradzka-Kiszkurno
Summary: This article describes the development of female gametophyte in Sedum rupestre L., providing new embryological information and expanding current knowledge on the subject. The paper discusses the functional ultrastructure of female gametophytic cells in S. rupestre, as well as the roles of antipodal cells and synergid cells in nutrient absorption and pollen tube attractant secretion. The reported data can be used to address taxonomic issues within the genus Sedum ser. Rupestria.
Article
Plant Sciences
Alberto Galan-Avila, Edgar Garcia-Fortea, Jaime Prohens, Francisco Javier Herraiz
Summary: In Cannabis sativa, the development of double haploids is a challenging and important research topic, involving the entire process of anther and pollen grain formation, microsporogenesis, and microgametogenesis. Furthermore, cold pretreatment can alter the gametophytic pathway, inducing embryogenic development in male flowers.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Horticulture
Ting Liao, Guobin Liu, Liqin Guo, Ye Wang, Yanwu Yao, Jun Cao
Summary: Platycladus orientalis is a preferred species for afforestation and landscaping in northern China, but its reproductive characteristics are not clear, which limits breeding work. This study systematically investigated the reproductive biology of P. orientalis, discovering abortive phenomena during cone development and determining the optimal time for artificial induction of cone transformation.
Article
Plant Sciences
Mariana Ferreira Alves, Fabio Pinheiro, Karen Lucia Gama De Toni, Jose Fernando Andrade Baumgratz
Summary: The study on Epidendrum species belonging to the subgenus Amphyglottium revealed that their pollinia and caudicle have a stable characteristic, regardless of their different pollination strategies and habitats. The male gametophyte formation process shows no interspecific variation among these species, indicating a stable trait for the genus.
BRAZILIAN JOURNAL OF BOTANY
(2023)
Review
Plant Sciences
Julien B. Bachelier
Summary: Sexual selection has traditionally been seen as male competition and female selection. However, recent evidence suggests that increased pollination has led to intensified competition between pollen tubes and selection by maternal tissue. The potential role of female competition has also started to emerge in both animal and plant evolution. This article reviews the embryological literature and re-evaluates unusual developmental traits in plant female germline, suggesting the presence of female intrasexual competition and selection in flowering plants. The findings also indicate a need to reconsider the reproductive biology of their most recent common ancestor.
BOTANICAL JOURNAL OF THE LINNEAN SOCIETY
(2022)
Article
Plant Sciences
Nigel P. Taylor, Daniela C. Zappi, Sinzinando Albuquerque-Lima
Summary: Girardot is a city with a long history and vibrant atmosphere, known for its beautiful streets, ancient buildings, and stunning landscapes. Its cultural arts and cuisine also attract numerous tourists to explore and experience.
Article
Plant Sciences
Sofia A. Kuhn, Fernanda M. Nogueira, Taina Schurer, Jorge E. A. Mariath
Summary: This study investigated the development of the seed cone in Araucaria angustifolia using various microscopic techniques. The results showed that the seed scale is derived from the ovule, the female gametophyte originates from a coenocytic tetrad, and the pollen tube has a single axis. These findings provide important insights into the relationships among function, development patterns, and homology in seed plants.
PLANT REPRODUCTION
(2023)
Article
Plant Sciences
Andrea D. Koehler, Monica L. Rossi, Vera T. C. Carneiro, Glaucia B. Cabral, Adriana P. Martinelli, Diva M. A. Dusi
Summary: Brachiaria, a widely cultivated forage plant species in Brazil, has significant agronomical importance. Within the species, the apomictic tetraploid cultivar B. brizantha cv. Marandu (syn. Urochloa brizantha) is particularly valued due to its extensive cultivation. However, the difference in ploidy levels between sexual and apomictic plants hinders breeding programs for Brachiaria. The induction of haploids and double haploids is therefore of great interest for generating novel genotypes for intraspecific crosses.
Article
Plant Sciences
Karina Jimenez-Duran, Monica K. Perez-Pacheco, Ricardo Wong, Margarita Collazo-Ortega, Judith Marquez-Guzman
Summary: The Podostemaceae family lacks double fertilization and central cell degenerates when the pollen tube reaches the synergid. Research shows that the degeneration of the central cell is mediated by programmed cell death, preventing double fertilization.
Article
Plant Sciences
Ulises Rosas, Elisa Sofia Fuentes-Perez, Cristian R. Cervantes, Estela Sandoval-Zapotitla, Itzel Santiago-Sandoval, Salvador Arias, Jeronimo Reyes-Santiago
Summary: The study investigated the infraspecific variation in flower shape and color in Mammillaria haageana, revealing broad variation between accessions belonging to the same subspecies without taxonomic congruence. Correlation analysis showed that solar radiation might explain the variation in tepal shape and color, suggesting adaptive significance. Anatomical sections were presented to propose underlying tepal structural features contributing to the diversity of flower phenotypes.
Review
Ecology
Gerhard Zotre, Frank Almeda, Salvador Arias, Barry Hammel, Emerson Pansarin
Summary: This paper criticizes the terminology of primary and secondary hemiepiphytes, showing that all available evidence falsifies the existence of secondary hemiepiphytes in traditionally listed families. The authors urge researchers to abandon the use of the term and focus on field studies for clarification.
JOURNAL OF TROPICAL ECOLOGY
(2021)
Article
Plant Sciences
Isaura Rosas-Reinhold, Daniel Sanchez, Salvador Arias
Summary: Aporocactus, an endemic plant genus in Mexico, was found to consist of only two species, contrary to the previously described five species by some authors. The study also revealed significant niche differentiation between the two species, highlighting their ecological uniqueness.
BOTANICAL SCIENCES
(2022)
Article
Plant Sciences
Daniel Franco-Estrada, Daniel Sanchez, Teresa Terrazas, Salvador Arias
Summary: The phylogenetic relationship of Peniocereus has been confirmed, with strong ties to the Pachycereus group and a specific ancestral area identified. This study provides the most comprehensive phylogenetic information for the subtribe Pachycereinae.
BRAZILIAN JOURNAL OF BOTANY
(2021)
Article
Plant Sciences
Daniel Sanchez, Balbina Vazquez-Benitez, Monserrat Vazquez-Sanchez, David Aquino, Salvador Arias
Summary: The genus Coryphantha is the second richest genus in the tribe Cacteae. Through Bayesian phylogenetic analysis, this study confirmed the monophyly of Coryphantha and proposed a new internal classification, including two subgenera and seven sections. Additionally, a new delimitation of Pelecyphora including C. macromeris was suggested.
Article
Plant Sciences
Daniel Franco-Estrada, Duniel Barrios, Cristian R. Cervantes, Xochitl Granados-Aguilar, Salvador Arias
Summary: This study aims to identify the species within the P. leucocephalus group s.s. and investigate its monophyly and phylogenetic relationships. The results demonstrate that the group consists of six species distributed in Mexico and Central America.
JOURNAL OF PLANT RESEARCH
(2022)
Article
Plant Sciences
Xochitl Granados-Aguilar, Ulises Rosas, Antonio Gonzalez-Rodriguez, Salvador Arias
BOTANICAL SCIENCES
(2022)
Article
Plant Sciences
Xochitl Granados-Aguilar, Guadalupe Palomino, Javier Martinez-Ramon, Salvador Arias
Summary: This study focused on the phylogenetic position and ploidy levels of Opuntia tehuacana and its sympatric species in the Tehuacan-Cuicatlan Valley, Mexico. Through phylogenetic analysis and flow cytometry, it was found that O. tehuacana belongs to the Basilares clade, along with most of its sympatric species. The ploidy levels of O. tehuacana were found to be the highest reported for the genus.
BRAZILIAN JOURNAL OF BOTANY
(2022)
Article
Plant Sciences
Beatriz Rendon-Aguilar, Luis Alberto Bernal-Ramirez, Angel Salvador Arias-Montes, Cecilia Leonor Jimenez-Sierra, Claudia Ballesteros-Barrera, Sinuhe Ortega-Jimenez, David Bravo-Avilez
Summary: This study investigated the ethnobotanical and ecological aspects of Mammillaria deherdtiana subsp. dodsonii in Oaxaca, Mexico. The results showed that the population structure of this subspecies is multimodal, with a seven-hour flowering time and a xenogamous breeding system. Additionally, the subspecies has various uses as food, medicine, and ornament, and it is found in Pinus and Abies forests.
ACTA BOTANICA MEXICANA
(2022)
Article
Biodiversity Conservation
Daniel Franco-Estrada, Enrique Ortiz, Jose Luis Villasenor, Salvador Arias
Summary: Ecological niche modelling was used to investigate the geographical distribution of the P. leucocephalus species group in Mexico and Central America. The results showed that the studied species had different responses to environmental variables, resulting in unique combinations of conditions for each species.
SYSTEMATICS AND BIODIVERSITY
(2022)
Article
Plant Sciences
Patricia Davila, Fabiola Soto-Trejo, Isela Rodriguez-Arevalo, Armando Ponce, Salvador Arias, Ana Escalante, Oswaldo Tellez, Rafael Lira
Summary: This study assesses the progress of research on conservation and activities for protecting plants in Mexico. Despite a wide range of publications on Mexican biodiversity, there is limited scientific work focused on developing plant conservation strategies and activities. Lack of connection and communication among researchers from different disciplines highlights the need for interdisciplinary collaboration.
BOTANICAL SCIENCES
(2022)
Article
Plant Sciences
B. A. R. R. Y. Hammel, S. A. L. V. A. D. O. R. Arias
Summary: A new species of Deamia from Nicaragua, characterized by its long, dangling stems and small flowers, is described and compared with other related species.
Article
Biology
Delil A. Chincoya, Salvador Arias, Felipe Vaca-Paniagua, Patricia Davila, Sofia Solorzano
Summary: Cacti account for a large number of species, with most of them native to the American continent. The biodiversity and evolutionary history of cacti, especially in Mexico, are poorly studied, despite the threats they face from human activities. This study analyzed the evolutionary relationships and history of 103 cacti species, revealing the significance of the Mexican Plateau in cacti evolution and the colonization of other regions.
Article
Biochemistry & Molecular Biology
Cristian R. Cervantes, Jose-Ruben Montes, Ulises Rosas, Salvador Arias
Summary: This study classified the Mammillaria haageana complex using genomic, morphological, and ecological data. The complex was found to consist of six distinct entities, mainly due to ecological speciation. These species hypotheses can be useful for future extinction risk assessments and conservation strategies.
MOLECULAR PHYLOGENETICS AND EVOLUTION
(2023)
