Glycoprotein composition along the pistil of Malus x domestica and the modulation of pollen tube growth

DSpace/Manakin Repository

Glycoprotein composition along the pistil of Malus x domestica and the modulation of pollen tube growth

Citable link to this page

 

 
Title: Glycoprotein composition along the pistil of Malus x domestica and the modulation of pollen tube growth
Author: Losada, Juan M; Herrero, Maria

Note: Order does not necessarily reflect citation order of authors.

Citation: Losada, Juan M., and Maria Herrero. 2014. “Glycoprotein composition along the pistil of Malus x domestica and the modulation of pollen tube growth.” BMC Plant Biology 14 (1): 1. doi:10.1186/1471-2229-14-1. http://dx.doi.org/10.1186/1471-2229-14-1.
Full Text & Related Files:
Abstract: Background: The characteristics of pollen tube growth are not constant, but display distinct patterns of growth within the different tissues of the pistil. In the stigma, the growth rate is slow and autotrophic, whereas in the style, it is rapid and heterotrophic. Very little is known about the interactions between these distinct maternal tissues and the traversing pollen tube and the role of this interaction on the observed metabolism. In this work we characterise pollen tube growth in the apple flower and look for differences in glycoprotein epitope localization between two different maternal tissues, the stigma and the style. Results: While immunocytochemically-detected arabinogalactan proteins were present at high levels in the stigma, they were not detected in the transmitting tissue of the style, where extensins were abundant. Whereas extensins remained at high levels in unpollinated pistils, they were no longer present in the style following pollen tube passage. Similarily, while abundant in unpollinated styles, insoluble polysaccharides such as β-glucans, were depleted in pollinated pistils. Conclusions: The switch from autotropic to heterotrophic pollen tube growth correlates spatially with a change of glycoprotein epitopes between the stigma and the style. The depletion of extensins and polysaccharides following pollen tube passage in the style suggest a possible contribution to the acceleration of heterotrophic pollen tube growth, which would imply an active contribution of female tissues on prezygotic male–female crosstalk.
Published Version: doi:10.1186/1471-2229-14-1
Other Sources: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3890559/pdf/
Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:11879549
Downloads of this work:

Show full Dublin Core record

This item appears in the following Collection(s)

 
 

Search DASH


Advanced Search
 
 

Submitters