2019
DOI: 10.1101/529032
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A Silk-Expressed Pectin Methylesterase Confers Cross-Incompatibility Between Wild and Domesticated Strains of Zea mays

Abstract: 12Despite being members of the same species, some strains of wild teosinte maintain themselves as 13 a distinct breeding population by blocking fertilization by pollen from neighboring maize plants. 14 These teosinte strains may be in the process of evolving into a separate species, since reproductive 15 barriers that block gene flow are critical components in speciation. This trait is conferred by the 16Teosinte crossing barrier1-s (Tcb1-s) haplotype, making Tcb1 a speciation gene candidate. Tcb1-17 s contain… Show more

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“…These studies suggest that both the male and female actions of unilateral dent sterility are related to the deesterification of pectin. Recently another pectin methylesterase Pertunda has also been identifed as responsible for the female action of the Tcb1 crossing barrier 32 , although pollen carrying the Tcb1-s and ga1 alleles is compatible with Ga1-s silks, and vice versa.…”
Section: Introductionmentioning
confidence: 99%
“…These studies suggest that both the male and female actions of unilateral dent sterility are related to the deesterification of pectin. Recently another pectin methylesterase Pertunda has also been identifed as responsible for the female action of the Tcb1 crossing barrier 32 , although pollen carrying the Tcb1-s and ga1 alleles is compatible with Ga1-s silks, and vice versa.…”
Section: Introductionmentioning
confidence: 99%