Gene Details:

Functional Descriptions:

  • A dominant male-sterile mutant Ms44 encodes a lipid transfer protein which is expressed specifically in the tapetum.
  • A single amino acid change from alanine to threonine at the signal peptide cleavage site of the Ms44 protein abolished protein processing and impeded the secretion of protein from tapetal cells into the locule, resulting in dominant male sterility.
  • While the total nitrogen (N) content in plants was not changed, Ms44 male-sterile plants reduced tassel growth and improved ear growth by partitioning more nitrogen to the ear, resulting in a 9.6% increase in kernel number.
  • A single point mutation in Ms44 results in dominant male sterility and improves nitrogen use efficiency in maize.
  • Ms44 maintainer line for fertility restoration, male-sterile inbred seed increase and hybrid seed production.
  • Ms44 signal peptide cleavage results in a disruption of pollen development leading to dominant male sterility in maize.

Literature:

Gene Resources:

Sequences:

cDNA Sequence
  • >Zm00001eb198610_T001
    ATGGCGCTAGAAGCAGCCACCGCCCCCCGCGCACTCCTCGCCGCGTGCCTCGTCCTGCTGGTCCTCGGCGGCGGCACCGGCCCGTCGTCGGTGCTGCGCGGCGCCGGGGCGCAGGCCGGCGGGCAGTGCCTGCCGCAGCTGAACCGCCTCCTGGCGTGCCGCGCGTACCTGGTGCCCGGCGCGCCGGACCCCAGCGCGGACTGCTGCAGCGCGCTGAGCGCCGTGTCGCACGAGTGCGCCTGCAGCACCATGGGCATCATCAACAGCCTGCCCGGCCGGTGCCACCTCGCCCAAGCCAACTGCTCCGCTTGA
CDS Sequence
  • >Zm00001eb198610_T001
    ATGGCGCTAGAAGCAGCCACCGCCCCCCGCGCACTCCTCGCCGCGTGCCTCGTCCTGCTGGTCCTCGGCGGCGGCACCGGCCCGTCGTCGGTGCTGCGCGGCGCCGGGGCGCAGGCCGGCGGGCAGTGCCTGCCGCAGCTGAACCGCCTCCTGGCGTGCCGCGCGTACCTGGTGCCCGGCGCGCCGGACCCCAGCGCGGACTGCTGCAGCGCGCTGAGCGCCGTGTCGCACGAGTGCGCCTGCAGCACCATGGGCATCATCAACAGCCTGCCCGGCCGGTGCCACCTCGCCCAAGCCAACTGCTCCGCTTGA
Protein Sequence
  • >Zm00001eb198610_P001
    MALEAATAPRALLAACLVLLVLGGGTGPSSVLRGAGAQAGGQCLPQLNRLLACRAYLVPGAPDPSADCCSALSAVSHECACSTMGIINSLPGRCHLAQANCSA

Source: Genetic information comes from the article