Results 11 to 20 of about 91 (80)

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

Climate adaptation and functional constraints drive pollen evolution in Apiales. [PDF]

New Phytol
Summary Pollen grains exhibit remarkable morphological diversity, shaped by selective pressures from environmental factors and mechanical constraints. Here, we investigate macroevolutionary patterns of pollen morphology in Apiales, an order of angiosperms with significant ecological and geographical diversity, to disentangle the roles of climate and ...
Baczyński J, Spalik K, Burke JM, Banasiak Ł.   +3 more
europepmc   +2 more sources

<i>Hagenia</i> from the early Miocene of Ethiopia: Evidence for possible niche evolution? [PDF]

Ecol Evol, 2021
This study shows that modern counterparts of fossil taxa might not be ideal to infer ecological or environmental traits, such as pollination, elevation, temperature, and precipitation on fossil plants or their assemblages. It is clear that since the origin of Hagenia its ecological requirements have changed significantly.
Grímsson F, Ulrich S, Coiro M, Graham SA, Jacobs BF, Currano ED, Xafis A, Zetter R.   +7 more
europepmc   +2 more sources

24 million years of pollination interaction between European linden flowers and bumble bees. [PDF]

New Phytol
Summary Pollination is the most common insect–plant mutualism, binding them in a co‐evolutionary framework. Historic evidence of this interaction can be partly inferred from time‐calibrated molecular phylogenies of plant and insect lineages or directly from fossils.
Geier C, Engel MS, Bouchal JM, Ulrich S, Schönenberger J, Uhl D, Wappler T, Wedmann S, Boudet L, Grímsson F.   +9 more
europepmc   +2 more sources

52 million years old Eucalyptus flower sheds more than pollen grains. [PDF]

Am J Bot, 2020
PREMISE Fossils provide fundamental evidence of the evolutionary processes that crafted today’s biodiversity and consequently for understanding life on Earth. We report the finding of Myrtaceidites eucalyptoides pollen grains preserved within the anthers of a 52‐million‐year‐old Eucalyptus flower collected at Laguna del Hunco locality of Argentinean ...
Zamaloa MC, Gandolfo MA, Nixon KC.
europepmc   +2 more sources

Structural and Functional Characterization of EXPO-Derived Extracellular Vesicles in Plants. [PDF]

Adv Sci (Weinh)
In this study, 3D electron tomography (ET), cryo‐ET, and immunogold transmission electron microscopy (TEM) are employed to characterize plant extracellular vesicles (EVs) under physiological conditions. EVs are classified into three distinct categories according to their size, content, and molecular‐marker profiles. Furthermore, Exo70E2‐positive medium
Gao J, Li Y, Zhang S, He Y, Liu Z, Wang J, Hua J, Chen J, Zhong J, Zhong H, Xia Y, Cui Y, Jiang L.   +12 more
europepmc   +2 more sources

Natural variation of MS2 confers male fertility and drives hybrid breeding in soybean

Plant Biotechnology Journal, Volume 21, Issue 11, Page 2322-2332, November 2023., 2023
Summary A complete and genetically stable male sterile line with high outcrossing rate is a prerequisite for the development of commercial hybrid soybean. It was reported in the last century that the soybean male sterile ms2 mutant has the highest record with seed set.
Xiaolong Fang, Xiangchi Feng, Xiaoyuan Sun, Xiangdong Yang, Qing Li, Xulei Yang, Jie Xu, Minghui Zhou, Chunjing Lin, Yi Sui, Limei Zhao, Baohui Liu, Fanjiang Kong, Chunbao Zhang, Meina Li   +14 more
wiley   +1 more source

Mutation of glucose‐methanol‐choline oxidoreductase leads to thermosensitive genic male sterility in rice and Arabidopsis

Plant Biotechnology Journal, Volume 20, Issue 10, Page 2023-2035, October 2022., 2022
Summary Thermosensitive genic male sterility (TGMS) lines serve as the major genetic resource for two‐line hybrid breeding in rice. However, their unstable sterility under occasional low temperatures in summer highly limits their application. In this study, we identified a novel rice TGMS line, ostms18, of cultivar ZH11 (Oryza sativa ssp.
Yan‐Fei Zhang, Yue‐Ling Li, Xiang Zhong, Jun‐Jie Wang, Lei Zhou, Yu Han, Dan‐Dan Li, Na Wang, Xue‐Hui Huang, Jun Zhu, Zhong‐Nan Yang   +10 more
wiley   +1 more source

Degradation of de‐esterified pctin/homogalacturonan by the polygalacturonase GhNSP is necessary for pollen exine formation and male fertility in cotton

Plant Biotechnology Journal, Volume 20, Issue 6, Page 1054-1068, June 2022., 2022
Summary The pollen wall exine provides a protective layer for the male gametophyte and is largely composed of sporopollenin, which comprises fatty acid derivatives and phenolics. However, the biochemical nature of the external exine is poorly understood.
Yuanlong Wu, Xiao Li, Yanlong Li, Huanhuan Ma, Huabin Chi, Yizan Ma, Jing Yang, Sai Xie, Rui Zhang, Linying Liu, Xiaojun Su, Rongjie Lv, Aamir Hamid Khan, Jie Kong, Xiaoping Guo, Keith Lindsey, Ling Min, Xianlong Zhang   +17 more
wiley   +1 more source

Why does pollen morphology vary? Evolutionary dynamics and morphospace occupation in the largest angiosperm order (Asterales)

New Phytologist, Volume 234, Issue 3, Page 1075-1087, May 2022., 2022
Summary Morphological diversity (disparity) is a key component of biodiversity and increasingly a focus of botanical research. Despite the wide range of morphologies represented by pollen grains, to date there are few studies focused on the controls on pollen disparity and morphospace occupation, and fewer still considering these parameters in a ...
Phillip E. Jardine, Luis Palazzesi, M. Cristina Tellería, Viviana D. Barreda   +3 more
wiley   +1 more source