Results 41 to 50 of about 76,851 (355)

Roles for NO and ROS signalling in pollen germination and pollen-tube elongation in Cupressus arizonica

open access: yesBiologia Plantarum, 2015
Roles for nitric oxide (NO) and reactive oxygen species (ROS) during pollen-tube growth have been well established in angiosperms, but there remains lack of information regarding their potential signalling roles in pollen tubes in gymnosperms.
S. Pasqualini   +6 more
doaj   +1 more source

A calcium-dependent protein kinase, ZmCPK32, specifically expressed in maize pollen to regulate pollen tube growth. [PDF]

open access: yesPLoS ONE, 2018
Calcium-dependent protein kinases (CPKs) play an essential role in the regulation of pollen tube growth. Although CPK genes have been identified in maize, and some have been functionally characterized, the molecular function of ZmCPKs associated with ...
Jie Li   +7 more
doaj   +1 more source

The juxtamembrane and carboxy-terminal domains of Arabidopsis PRK2 are critical for ROP-induced growth in pollen tubes. [PDF]

open access: yes, 2013
Polarized growth of pollen tubes is a critical step for successful reproduction in angiosperms and is controlled by ROP GTPases. Spatiotemporal activation of ROP (Rho GTPases of plants) necessitates a complex and sophisticated regulatory system, in which
Ge, Fu-Rong   +6 more
core   +1 more source

Reproductive abnormalities in interspecific crosses involving Gossypium hirsutum and Gossypium arboreum [PDF]

open access: yesElectronic Journal of Plant Breeding, 2010
A successful cross fertilization involving two different species implies that a chain of reproductive process takes placeunhampered after pollination. The coordination and interaction between genes or gene complexes in the pollen parent andmatching gene ...
S.Saravanan, K. Koodalingam and T.S. Raveendran
doaj  

Arabidopsis LIM proteins PLIM2a and PLIM2b regulate actin configuration during pollen tube growth

open access: yesBiologia Plantarum, 2013
The pollen tube grows rapidly, exclusively at its tip, to deliver its sperm for fertilization. The polarized tip growth of pollen tubes is dependent on the highly dynamic actin cytoskeleton. Plant LIM proteins (named after initials of containing proteins
J. R. Ye, L. M. Zhou, M. L. Xu
doaj   +1 more source

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

open access: yes, 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.,   +4 more
core   +2 more sources

Structure and function of class III pistil-specific extensin-like protein in interspecific reproductive barriers

open access: yesBMC Plant Biology, 2019
Background The transmitting tissue of the style is the pathway for pollen tube growth to the ovules and has components that function in recognizing and discriminating appropriate pollen genotypes. In Nicotiana tabacum, the class III pistil extensin-like (
Camila M. L. Alves   +2 more
doaj   +1 more source

Toward in vitro fertilization in Brachiaria spp. [PDF]

open access: yes, 2010
Brachiaria are forage grasses widely cultivated in tropical areas. In vitro pollination was applied to accessions of Brachiaria spp. by placing pollen of non-dehiscent anthers on a solid medium near isolated ovaries.
Alves, E.R.   +5 more
core   +2 more sources

The Arabidopsis mutant feronia disrupts the female gametophytic control of pollen tube reception [PDF]

open access: yes, 2003
Reproduction in angiosperms depends on communication processes of the male gametophyte (pollen) with the female floral organs (pistil, transmitting tissue) and the female gametophyte (embryo sac).
Federer, M.   +3 more
core   +2 more sources

Pollen tube contents from failed fertilization contribute to seed coat initiation in Arabidopsis [version 1; peer review: 2 approved, 1 approved with reservations]

open access: yesF1000Research, 2019
Plant seeds are essential for human beings, constituting 70% of carbohydrate resources worldwide; examples include rice, wheat, and corn. In angiosperms, fertilization of the egg by a sperm cell is required for seed formation; therefore, fertilization ...
Xiaoyan Liu   +2 more
doaj   +1 more source

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