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 (203 Česká republika, domácí), Joerg FUCHS, Maria CUACOS, Dmitri DEMIDOV, Sheng ZUO (156 Čína, domácí), Jana PEČINKOVÁ (203 Česká republika, domácí), Martin MASCHER, Mathieu INGOUFF, Stefan HECKMANN, Andreas HOUBEN, Karel ŘÍHA (203 Česká republika, domácí) a Inna LERMONTOVA (garant)
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: 10.500 v roce 2022
Kód RIV
RIV/00216224:14740/23:00132941
Organizační jednotka
Středoevropský technologický institut
UT WoS
001007275100001
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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