2023
High temperature increases centromere-mediated genome elimination frequency and enhances haploid induction in Arabidopsis
AHMADLI, Ulkar; Manikandan KALIDASS; Lucie CRHÁK KHAITOVÁ; Joerg FUCHS; Maria CUACOS et. al.Základní údaje
Originální název
High temperature increases centromere-mediated genome elimination frequency and enhances haploid induction in Arabidopsis
Autoři
AHMADLI, Ulkar; Manikandan KALIDASS; Lucie CRHÁK KHAITOVÁ; Joerg FUCHS; Maria CUACOS; Dmitri DEMIDOV; Sheng ZUO; Jana PEČINKOVÁ ORCID; Martin MASCHER; Mathieu INGOUFF; Stefan HECKMANN; Andreas HOUBEN; Karel ŘÍHA a Inna LERMONTOVA
Vydání
Plant Communications, Elsevier, 2023, 2590-3462
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10611 Plant sciences, botany
Stát vydavatele
Nizozemské království
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 9.400
Kód RIV
RIV/00216224:14740/23:00132941
Organizační jednotka
Středoevropský technologický institut
UT WoS
001007275100001
EID Scopus
2-s2.0-85146735430
Klíčová slova anglicky
centromere; kinetochore null 2; CENPC-k; cenh3-4; temperature stress; haploid induction
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 9. 10. 2024 12:04, Mgr. Eva Dubská
Anotace
V originále
Double haploid production is the most effective way to create true-breeding lines in a single generation. In Arabidopsis, haploid induction via mutation of the centromere-specific histone H3 (cenH3) has been shown when the mutant is outcrossed to the wild-type, and the wild-type genome remains in the haploid progeny. However, factors that affect haploid induction are still poorly understood. Here, we report that a mutant of the cenH3 assembly factor Kinetochore Null2 (KNL2) can be used as a haploid inducer when pollinated by the wild-type. We discovered that short-term temperature stress of the knl2 mutant increased the efficiency of haploid induction 10-fold. We also demonstrated that a point mutation in the CENPC-k motif of KNL2 is sufficient to generate haploid-inducing lines, suggesting that haploid-inducing lines in crops can be identified in a naturally occurring or chemically induced mutant population, avoiding the generic modification (GM) approach at any stage. Furthermore, a cenh3-4 mutant functioned as a haploid inducer in response to short-term heat stress, even though it did not induce haploids under standard conditions. Thus, we identified KNL2 as a new target gene for the generation of haploid-inducer lines and showed that exposure of centromeric protein mutants to high temperature strongly increases their haploid induction efficiency.
Návaznosti
| EF15_003/0000479, projekt VaV |
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