Results 61 to 70 of about 6,476 (220)

Pollen-Pistil Interactions and Their Role in Mate Selection [PDF]

Plant Physiology, 2016
Pollen-pistil interactions contribute to mate selection at the postmating, prezygotic level.
Patricia A. Bedinger, Amanda K. Broz, Alejandro Tovar-Mendez, Bruce McClure   +3 more
openaire   +2 more sources

Nocturnal Lepidopterans as Essential Pollinators of Aspidosperma pyrifolium (Apocynaceae), a Keystone Tree in the Caatinga Dry Forest

Journal of Applied Entomology, EarlyView.
ABSTRACT Pollination is a key ecosystem service, yet most studies focus on diurnal interactions, often overlooking nocturnal pollinators such as hawkmoths and settling moths. In arid environments, nocturnal pollination plays a crucial role in maintaining native plant species of high biocultural value, as seen in the Caatinga dry forest.
Joel A. Queiroz, Arthur Domingos‐Melo, Zelma G. M. Quirino, Isabel C. S. Machado   +3 more
wiley   +1 more source

Gametophyte interaction and sexual reproduction: how plants make a zygote [PDF]

, 2005
The evolutionary success of higher plants relies on a very short gametophytic phase, which underlies the sexual reproduction cycle. Sexual plant reproduction takes place in special organs of the flower: pollen, the male gametophyte, is released from the ...
Becker, J.D., Boavida, L.C., Feijó, J.A., Vieira, A.M.   +3 more
core   +1 more source

THESEUS1 is a component of the receptor complex for establishing polytubey block in Arabidopsis

Journal of Integrative Plant Biology, EarlyView.
THESEUS1 (THE1) is a component of the CrRLK1L‐RALF signaling complex specifically responsible for establishing the polytubey block at the Arabidopsis septum. Genetic and biochemical analyses demonstrate that THE1, together with FERONIA, ANJ and HERK1, forms a receptor complex that senses pollen tube‐derived RALF peptides, thereby establishing a barrier
Qiyun Li, Xuefei Li, Sufan Yuan, Zhihui Feng, Li‐Jia Qu, Sheng Zhong   +5 more
wiley   +1 more source

Insight into S-RNase-based self-incompatibility in Petunia: recent findings and future directions

Frontiers in Plant Science, 2015
S-RNase-based self-incompatibility in Petunia is a self/non-self recognition system that allows the pistil to reject self-pollen to prevent inbreeding and to accept non-self pollen for outcrossing.
Justin S Williams, Lihua eWu, Shu eLi, Penglin eSun, Teh-Hui eKao   +4 more
doaj   +1 more source

Effects of Alternaria alternata f.sp. lycopersici toxins on pollen [PDF]

, 1988
Effects of the phytotoxic compounds (AAL-toxins) isolated from cell-free culture filtrates of Alternaria alternata f.sp. lycopersici on in vitro pollen development were studied. AAL-toxins inhibited both germination and tube growth of pollen from several
Bino, R.J.,, Dons, J.J.M.,, Franken, J.,, Hille, J.,, Witsenboer, H.M.A.,   +4 more
core   +2 more sources

Testing macroevolutionary predictions of the Grant‐Stebbins model in the origin of Aeschynanthus acuminatus

New Phytologist, EarlyView.
Summary The Grant‐Stebbins model predicts that a plant species encountering different pollinators across its range may undergo local adaptation and, subsequently, ecological speciation. We tested whether this could explain the origin of Aeschynanthus acuminatus (Gesneriaceae), a species phylogenetically derived from sunbird specialist ancestors.
Jing‐Yi Lu, Yao‐Wu Xing, Hong Truong Luu, Richard H. Ree   +3 more
wiley   +1 more source

Cellular localization of ROS and NO in olive reproductive tissues during flower development

BMC Plant Biology, 2010
Background Recent studies have shown that reactive oxygen species (ROS) and nitric oxide (NO) are involved in the signalling processes taking place during the interactions pollen-pistil in several plants. The olive tree (Olea europaea L.) is an important
Alché Juan, Rodríguez-García María, Zafra Adoración   +2 more
doaj   +1 more source

Molecular analysis of the interaction between cardosin A and phospholipase Dα [PDF]

, 2005
Cardosin A is an RGD-containing aspartic proteinase from the stigmatic papillae of Cynara cardunculus L. A putative cardosin A-binding protein has previously been isolated from pollen suggesting its potential involvement in pollen2013pistil interaction ...
Bur, Daniel, Cheung, Alice Y., Faro, Carlos, Mueller, Eva-Christina, Otto, Albrecht, Pires, Euclides, Simões, Isaura   +6 more
core   +1 more source

From recognition to response: integrated signaling pathways determining pollen acceptance and rejection in Brassicaceae

New Phytologist, EarlyView.
Summary Generation of competent offspring is vital for the prosperity of flowering plants. The pistil not only functions as a conduit for pollen tubes to grow to the ovary but also provides a selective venue for facilitating the growth of compatible pollen tubes and discouraging invaders and incompatible pollen.
Tong Zhang, Shuyan Li, Shengwei Dou, Qiaohong Duan   +3 more
wiley   +1 more source