Results 1 to 10 of about 63,209 (121)

Pollen morphology of Waltheria L. (Malvaceae-Byttnerioideae) from Bahia, Brazil

Acta Botânica Brasílica, 2017
Waltheria encompasses about 60 species distributed in Brazil and Mexico. To improve the palynology of the genus, we analyzed 14 species occurring in the Brazilian State of Bahia.
Cristiano Eduardo Amaral Silveira Júnior, Luciene Cristina Lima e Lima, Marileide Dias Saba   +2 more
doaj   +3 more sources

High‐temperature stress in crops: male sterility, yield loss and potential remedy approaches [PDF]

Plant Biotechnology Journal, Volume 21, Issue 4, Page 680-697, April 2023., 2023
Summary Global food security is one of the utmost essential challenges in the 21st century in providing enough food for the growing population while coping with the already stressed environment. High temperature (HT) is one of the main factors affecting plant growth, development and reproduction and causes male sterility in plants. In male reproductive
Aamir Hamid Khan, Ling Min, Yizan Ma, Muhammad Zeeshan, Shuangxia Jin, Xianlong Zhang   +5 more
wiley   +2 more sources

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

Ecology and Evolution, Volume 11, Issue 10, Page 5164-5186, May 2021., 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.
Friðgeir Grímsson, Silvia Ulrich, Mario Coiro, Shirley A. Graham, Bonnie F. Jacobs, Ellen D. Currano, Alexandros Xafis, Reinhard Zetter   +7 more
wiley   +2 more sources

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

American Journal of Botany, Volume 107, Issue 12, Page 1763-1771, December 2020., 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 ...
Maria C. Zamaloa, Maria A. Gandolfo, Kevin C. Nixon   +2 more
wiley   +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

The Class III peroxidase gene OsPrx30, transcriptionally modulated by the AT‐hook protein OsATH1, mediates rice bacterial blight‐induced ROS accumulation

Journal of Integrative Plant Biology, Volume 63, Issue 2, Page 393-408, February 2021., 2021
The rice AT‐hook transcription factor OsATH1 epigenetically modulates the expression of the peroxidase gene OsPrx30, which functions in the rice bacterial blight‐induced reactive oxygen species signaling pathway. Abstract Class III peroxidases (CIII Prxs) play critical roles in plant immunity by scavenging reactive oxygen species (ROS).
Hao Liu, Shuangyu Dong, Ming Li, Fengwei Gu, Guili Yang, Tao Guo, Zhiqiang Chen, Jiafeng Wang   +7 more
wiley   +1 more source

Lectin receptor kinase OsLecRK‐S.7 is required for pollen development and male fertility

Journal of Integrative Plant Biology, Volume 62, Issue 8, Page 1227-1245, August 2020., 2020
By isolating a recessive mutant gene responsible for a complete male sterile phenotype, we identified the first legume‐lectin receptor kinase in rice, OsLecRK‐S.7, with a function in regulating pollen exine assembly and aperture development. OsLecRK‐S.7 required the kinase activity for its gene function. Abstract Pollen grains are covered by exine that
Xiaoqun Peng, Menglong Wang, Yiqi Li, Wei Yan, Zhenyi Chang, Zhufeng Chen, Chunjue Xu, Chengwei Yang, Xing Wang Deng, Jianxin Wu, Xiaoyan Tang   +10 more
wiley   +1 more source