Claim · model-written summary
Male sterility did not change total nitrogen content in the plants.
Zea maysNot reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“improves nitrogen use efficiency in maize”
e3“Ms44 male-sterile plants reduced tassel growth and improved ear growth by partitioning more nitrogen to the ear”
e5“While the total nitrogen (N) content in plants was not changed”
Title
Tim Fox; Jason DeBruin; Kristin Haug Collet; et al. Plant Biotechnology Journal 2017. doi:10.1111/pbi.12689
Other claims from this paper (13)
- Observation Ms44 encodes a lipid transfer protein expressed specifically in the tapetum.
- Intervention effect A single amino acid change from alanine to threonine abolished Ms44 protein processing.
- Intervention effect The same change impeded secretion of protein from tapetal cells into the locule.
- Intervention effect The same change resulted in dominant male sterility.
- Intervention effect Ms44 male-sterile plants reduced tassel growth.
- Intervention effect Ms44 male-sterile plants improved ear growth by partitioning more nitrogen to the ear.
- Intervention effect Male-sterile plants increased kernel number by 9.6%.
- Intervention effect Hybrids carrying the Ms44 allele had a 4%-8.5% yield advantage when N is limiting, relative to wild type.
- Intervention effect Hybrids carrying the Ms44 allele had a 1.7% yield advantage under drought, relative to wild type.
- Intervention effect Hybrids carrying the Ms44 allele had a 0.9% yield advantage under optimal growth conditions, relative to wild type.
- Observation An Ms44 maintainer line was developed for fertility restoration and male-sterile seed increase.
- Mechanism Protein secretion from the tapetum into the locule is critical for pollen development.
- Intervention effect Reduced competition between tassel and ear by male sterility improves grain yield under low-nitrogen conditions.