A survey of triploid block inconsistency: potential mechanisms and evolutionary implications on polyploid speciation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F25%3A10508056" target="_blank" >RIV/00216208:11310/25:10508056 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=BzCRHJeL3I" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=BzCRHJeL3I</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/jxb/eraf050" target="_blank" >10.1093/jxb/eraf050</a>
Alternative languages
Result language
angličtina
Original language name
A survey of triploid block inconsistency: potential mechanisms and evolutionary implications on polyploid speciation
Original language description
The triploid block, primarily caused by endosperm developmental issues, is known as a significant barrier to interploidy hybridization among flowering plants and, thereby, polyploid speciation. However, its strength varies across taxa, with some instances of leakiness, questioning its universal role as a barrier. We conducted a literature survey to explore the causes of the variation in the strength of the triploid block across 11 angiosperm families. We assessed the impact of interploidy cross direction, types of endosperm development, endosperm persistence at seed maturity, and divergence between cytotypes using a Bayesian meta-analysis. We found a significant influence of the type of endosperm in shaping variation in triploid block strength. Other factors tested had no impact on triploid seed viability, probably due to limited data and inconsistencies in estimation methods across the literature. In addition, triploid seed viability in experimental crosses was sometimes correlated to the occurrence of triploid hybrids in nature, sometimes not, suggesting a mixed role for the triploid block in shaping interspecies gene flow. Altogether, our study highlights the need for unified approaches in future studies on the triploid block to advance our understanding of its variation and evolutionary implications. This review revisits developmental and evolutionary mechanisms underlying the triploid block to explain why polyploidization does not always equate with 'instant speciation'.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10611 - Plant sciences, botany
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Experimental Botany
ISSN
0022-0957
e-ISSN
1460-2431
Volume of the periodical
76
Issue of the periodical within the volume
8
Country of publishing house
GB - UNITED KINGDOM
Number of pages
16
Pages from-to
2096-2111
UT code for WoS article
001449214600001
EID of the result in the Scopus database
2-s2.0-105006985803