Results 21 to 30 of about 1,217 (172)

Pollen and microsporangium development in Ziziphus jujuba, Z. mucronata, Paliurus spina-christi and Gouania ulmifolia (Rhamnaceae) [PDF]

Anais da Academia Brasileira de Ciências, 2020
The aim of this paper is to investigate the ultrastructural events that occur during pollen grains development, with emphasis in pollen grain wall and tapetum ontogeny in Ziziphus jujuba, Z.
MARINA M. GOTELLI, ELSA C. LATTAR, GABRIELA ZARVLASKY, BEATRIZ G. GALATI   +3 more
doaj   +2 more sources

Development of the Middle Layer in the Anther of Arabidopsis

Frontiers in Plant Science, 2021
The middle layer is an essential cell layer of the anther wall located between the endothecium and tapetum in Arabidopsis. Based on sectioning, the middle layer was found to be degraded at stage 7, which led to the separation of the tapetum from the ...
Jing-Shi Xue, Chi Yao, Qin-Lin Xu, Chang-Xu Sui, Xin-Lei Jia, Wen-Jing Hu, Yong-Lin Lv, Yi-Feng Feng, Yu-Jia Peng, Shi-Yi Shen, Nai-Ying Yang, Yu-Xia Lou, Zhong-Nan Yang   +12 more
doaj   +1 more source

Interaction between floral rewards and floral symmetry shapes diversification dynamics in Amazonian trees. [PDF]

New Phytol
Summary Floral zygomorphy, or monosymmetry, is thought to have a positive effect on the diversification rates of angiosperms, but its true impact is still an open topic. Given the controversy surrounding this matter, our study evaluates whether rewards such as nectar and pollen produced by floral structures evolve in correlation with floral symmetry ...
Graciano D, Burin G, Carmello-Guerreiro SM, Tölke ED.   +3 more
europepmc   +2 more sources

Chloroplasts in anther endothecium of Zea mays (Poaceae) [PDF]

American Journal of Botany, 2015
PREMISE OF THE STUDY:Although anthers of Zea mays, Oryza sativa, and Arabidopsis thaliana have been studied intensively using genetic and biochemical analyses in the past 20 years, few updates to anther anatomical and ultrastructural descriptions have been reported.
Katherine M, Murphy, Rachel L, Egger, Virginia, Walbot   +2 more
openaire   +2 more sources

A Cytological Study of Anther and Pollen Development in Chinquapin (Castanea henryi)

HortScience, 2020
The normal development of anthers and the formation of functional pollen are the prerequisites for successful pollination and fertilization. In this study, we observed dynamic changes in inflorescence and anther development in the chinquapin (Castanea ...
Weiping Zhong , Zhoujun Zhu , Fen Ouyang, Qi Qiu , Xiaoming Fan , Deyi Yuan   +5 more
doaj   +1 more source

Exothecium and endothecium cell populations in Allium cepa L. anthers.

CYTOLOGIA, 1987
A. M. del Castillo
openaire   +3 more sources

Anther dehiscence is regulated by gibberellic acid in yellow lupine (Lupinus luteus L.)

BMC Plant Biology, 2021
Background Anther dehiscence resulting in the release of pollen grains is tightly regulated in a spatiotemporal manner by various factors. In yellow lupine (Lupinus luteus L.), a species that shows cleistogamy, the anthers split before the flowers open ...
Katarzyna Marciniak, Krzysztof Przedniczek   +1 more
doaj   +1 more source

Redundant Glycerol-3-Phosphate Acyltransferases Regulate Thermo-Sensitive Genic Male Sterility in Rice. [PDF]

Plant Biotechnol J
ABSTRACT Thermo‐sensitive genic male sterility (TGMS) lines play a pivotal role in two‐line hybrid rice breeding. However, the availability of elite TGMS germplasm remains limited, and the molecular mechanisms underlying fertility transition of TGMS lines are still poorly understood.
Cheng S, Zheng H, Tian Y, Wang C, Yu X, Dong K, Wang J, Lu J, Chen K, He X, Shao K, Gao J, Yao B, Hu Y, Xie Z, He L, Xie Z, Zhu Y, Guo S, Lei D, Jian A, Zhu X, Yu H, Zhang S, Chen M, Chen Y, Jiang L, Ren Y, Guo X, Liu S, Liu X, Zhu S, Zhao Z, Wan J.   +33 more
europepmc   +2 more sources

Flower, seed, and fruit development in three Tunisian species of Polygonum: Implications for their taxonomy and evolution of distyly in Polygonaceae.

PLoS ONE, 2020
Polygonum is the largest genus of Polygonaceae and 5 species are reported in Tunisia. In order to characterized flower, seed, and fruit development in Polygonum, flower and fruit of Polygonium equisetiforme (var. graecum and peyerinhoffi), P.
Maher Mahmoudi, Fayçal Boughalleb, Giuseppe Pellegrino, Raoudha Abdellaoui, Nizar Nasri   +4 more
doaj   +1 more source

ZmMs33 promotes anther elongation via modulating cell elongation regulators, metabolic homeostasis, and cell wall remodeling in maize

Crop Journal, 2023
Plant cell elongation depends on well-defined gene regulations, adequate nutrients, and timely cell wall modifications. Anther size is positively correlated with the number and viability of pollen grains, while little is known about molecular mechanisms ...
Ziwen Li, Taotao Zhu, Shuangshuang Liu, Lina Zhao, Xueli An, Yan Long, Xun Wei, Juan Zhang, Zhenying Dong, Xiangyuan Wan   +9 more
doaj   +1 more source