UZH-Logo

Maintenance Infos

Male–female interaction and temperature variation affect pollen performance in Citrus


Distefano, Gaetano; Hedhly, Afif; Las Casas, Giuseppina; La Malfa, Stefano; Herrero, Maria; Gentile, Alessandra (2012). Male–female interaction and temperature variation affect pollen performance in Citrus. Scientia Horticulturae, 140(1):1-7.

Abstract

Despite the extensive research work characterizing pollen performance in several plant species, less effort has been made to characterize it in some economically important species as Citrus, in which the failure of the sexual reproductive process, and subsequent parthenocarpic fruit development and seedlessness are prized characters. In this work we characterized pollen–pistil interaction in the three ancestral true-type Citrus species in order to determine the influence of the male and female genotypes, as well as of the temperature regime on pollen performance. Specifically, we characterized the effect of temperature on pollen grain germination in vitro, and on pollen tube growth in vivo in cut flowers and in planta under field temperature conditions. Results obtained showed that temperature variation has a strong effect on pollen germination, and on pollen tube kinetics and on their population size depending on the specific male–female combination. The optimum temperature for pollen germination in vitro was of 25 °C, while the most favorable temperature to accelerate in vivo pollen tube growth depended on the particular male–female interaction and ranged between 15 and 25 °C. Furthermore, temperature appears to have an effect on self-incompatibility reaction by affecting the place where pollen tubes are arrested. Overall, our results show that pollen performance is not only an inherent characteristic of the pollen genotype, but is largely dependent on the particular male–female combination and on genotype–temperature interactions.

Despite the extensive research work characterizing pollen performance in several plant species, less effort has been made to characterize it in some economically important species as Citrus, in which the failure of the sexual reproductive process, and subsequent parthenocarpic fruit development and seedlessness are prized characters. In this work we characterized pollen–pistil interaction in the three ancestral true-type Citrus species in order to determine the influence of the male and female genotypes, as well as of the temperature regime on pollen performance. Specifically, we characterized the effect of temperature on pollen grain germination in vitro, and on pollen tube growth in vivo in cut flowers and in planta under field temperature conditions. Results obtained showed that temperature variation has a strong effect on pollen germination, and on pollen tube kinetics and on their population size depending on the specific male–female combination. The optimum temperature for pollen germination in vitro was of 25 °C, while the most favorable temperature to accelerate in vivo pollen tube growth depended on the particular male–female interaction and ranged between 15 and 25 °C. Furthermore, temperature appears to have an effect on self-incompatibility reaction by affecting the place where pollen tubes are arrested. Overall, our results show that pollen performance is not only an inherent characteristic of the pollen genotype, but is largely dependent on the particular male–female combination and on genotype–temperature interactions.

Citations

8 citations in Web of Science®
7 citations in Scopus®
Google Scholar™

Altmetrics

Downloads

46 downloads since deposited on 22 Feb 2013
13 downloads since 12 months
Detailed statistics

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Department of Plant and Microbial Biology
07 Faculty of Science > Zurich-Basel Plant Science Center
Dewey Decimal Classification:580 Plants (Botany)
Language:English
Date:2012
Deposited On:22 Feb 2013 15:09
Last Modified:05 Apr 2016 16:32
Publisher:Elsevier
ISSN:0304-4238
Publisher DOI:https://doi.org/10.1016/j.scienta.2012.03.011
Permanent URL: https://doi.org/10.5167/uzh-74188

Download

[img]
Content: Published Version
Filetype: PDF - Registered users only
Size: 485kB
View at publisher
[img]
Preview
Content: Accepted Version
Filetype: PDF
Size: 350kB

TrendTerms

TrendTerms displays relevant terms of the abstract of this publication and related documents on a map. The terms and their relations were extracted from ZORA using word statistics. Their timelines are taken from ZORA as well. The bubble size of a term is proportional to the number of documents where the term occurs. Red, orange, yellow and green colors are used for terms that occur in the current document; red indicates high interlinkedness of a term with other terms, orange, yellow and green decreasing interlinkedness. Blue is used for terms that have a relation with the terms in this document, but occur in other documents.
You can navigate and zoom the map. Mouse-hovering a term displays its timeline, clicking it yields the associated documents.

Author Collaborations