Results 81 to 90 of about 23,410 (249)

Callose (β-1,3 glucan) is essential for Arabidopsis pollen wall patterning, but not tube growth [PDF]

, 2005
Background: Callose (β-1,3 glucan) separates developing pollen grains, preventing their underlying walls (exine) from fusing. The pollen tubes that transport sperm to female gametes also contain callose, both in their walls as well as in the plugs that ...
Swanson, Rob
core   +2 more sources

A PLETHORA3/7 transcription factor shapes cucumber shoot architecture

New Phytologist, EarlyView.
Summary PLETHORA transcription factors (PLTs) are master regulators of plant development. Loss of shoot meristematic PLTs leads to reduced phyllotactic regularity and robustness in Arabidopsis and increased inflorescence branching in tomato. Whether these factors have similar functions in other species is not known.
Merijn Kerstens, Florian Müller, Kelvin Adema, Olga Kulikova, Magdalena Lastdrager, Ben Scheres, Viola Willemsen   +6 more
wiley   +1 more source

Morphology and viability of pollen grains from passion fruit species (Passiflora spp.)

Acta Botânica Brasílica, 2013
The characterization and viability of pollen grains are useful tools to guide crosses in breeding programs. The objective of this study was to describe the morphological patterns and viability of pollen grains from five accessions of Passiflora edulis f.
Taliane Leila Soares, Onildo Nunes de Jesus, Everton Hilo de Souza, Janay Almeida dos Santos-Serejo, Eder Jorge de Oliveira   +4 more
doaj   +1 more source

Reproductive success through high pollinator visitation rates despite self incompatibility in an endangered wallflower [PDF]

, 2016
PREMISE OF THE STUDY: Self incompatibility (SI) in rare plants presents a unique challenge—SI protects plants from inbreeding depression, but requires a sufficient number of mates and xenogamous pollination. Does SI persist in an endangered polyploid? Is
Herman, Julie A., Lucas, Jessica, Melen, Miranda K., O’Malley, Rachel E., Parker, Ingrid M., Thom, Aaron M., Whittall, Justen B.   +6 more
core   +2 more sources

MITOGEN‐ACTIVATED PROTEIN KINASE9 fine‐tunes hypoxia signaling by phosphorylating ERF‐VII transcription factors in Arabidopsis

New Phytologist, EarlyView.
Summary In plants, hypoxia sensing is controlled by the stabilization of group VII ethylene response factors (ERF‐VIIs), which are post‐translationally activated by the mitogen‐activated protein kinases (MAPKs) MPK3 and MPK6. However, how plants fine‐tune the MPK3/MPK6‐mediated phosphorylation of ERF‐VIIs to maintain cellular homeostasis remains ...
De‐Mian Zhou, Ying Zhou, Xu‐Chen Wu, Qing‐Ying Ke, Tian‐Yi Zhang, Zi‐Yuan Yin, Li‐Li Shi, Ke Liao, Shi Xiao, Qin‐Fang Chen   +9 more
wiley   +1 more source

DEVELOPMENT OF AN EFFICIENT METHOD FOR in vitro GERMINATION OF SORGHUM POLLEN

Tropical and Subtropical Agroecosystems, 2011
The in vitro pollen germination of sorghum is useful in viability, physiology and genetic transformation studies of pollen. However, the media reported are not efficient.
José Luis Anaya-López, Norma Angélica Garduño-Tamayo, Carlos Alberto Núñez-Colín, Victor Pecina-Quintero, Victor Montero-Tavera, Noe Montes-García, Mario Martín INIFAP González-Chavira   +6 more
doaj  

Pollen morphology in two Urgineoid species of Drimia (Baker) Jessop [PDF]

, 2016
Pollen grains of eight accessions of Urginea indica (Roxb) Kunth. and two accessions of Urgineawightii (Wight) Lakshmin. were examined by Light microscopy and Scanning electron microscopy.
Kameshwari, M. N. Shiva, Nijagunaiah, R., Prathima, P.   +2 more
core   +2 more sources

EBSn, a Robust Synthetic Reporter for Monitoring Ethylene Responses in Plants

Plant Biotechnology Journal, EarlyView.
ABSTRACT Ethylene is a gaseous plant hormone that controls a wide array of physiologically relevant processes, including plant responses to biotic and abiotic stress, and induces ripening in climacteric fruits. To monitor ethylene in plants, analytical methods, phenotypic assays, gene expression analysis and transcriptional or translational reporters ...
Josefina‐Patricia Fernandez‐Moreno, Mario Fenech, Anna E. Yaschenko, Chengsong Zhao, Matthew Neubauer, Hannah N. Davis, Alex J. Marchi, Raine Concannon, Alexandra Keren‐Keiserman, Moshe Reuveni, Victor Levitsky, Dmitry Oshchepkov, Vladislav Dolgikh, Alexander Goldshmidt, José T. Ascencio‐Ibáñez, Elena Zemlyanskaya, Jose M. Alonso, Anna N. Stepanova   +17 more
wiley   +1 more source

Immunofluorescence Labeling of Pollen Tubes

Bio-Protocol, 2014
Pollen tube is regarded as an excellent single-cell model system in plant cell studies. This protocol describes the use of a rapid and reliable immunofluorescence labeling method for studying in situ localization of proteins in pollen tubes.
Hao Wang, Liwen Jiang
doaj   +1 more source

MsWRKY49 Modulates Pollen Tube Elongation in Response to Boron Deficiency by Regulating Reactive Oxygen Species Homeostasis in Alfalfa

Plant Biotechnology Journal, EarlyView.
ABSTRACT Boron, an essential micronutrient, plays a crucial role in plant reproductive processes. Boron deficiency is widespread in many regions and significantly reduces alfalfa (Medicago sativa) seed yield, yet the molecular mechanisms underlying its impact on reproductive organ development remain elusive.
Juan Wang, Wenxin Peng, Zhicheng Jia, Xinru Su, Tianqi Zhu, Zhenzhen Liu, Shoujiang Sun, Jinyu Shi, Manli Li, Liru Dou, Peisheng Mao   +10 more
wiley   +1 more source