J 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

Štítky

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
Název: Regulace rostlinné meiózy