Claim · model-written summary
Hybrids carrying the Ms44 allele had a 0.9% yield advantage under optimal growth conditions, relative to wild type.
- Material
- Ms44 allelee6
- Treatment
- optimal growth conditionse7
- Outcome
- yield advantagee7
- Direction
- increaseinferrede7
- Value
- 0.9%e7
- Comparator
- wild typee7
Zea maysNot reportedGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“improves nitrogen use efficiency in maize”
e6“Hybrids carrying the Ms44 allele demonstrated a 4%-8.5% yield advantage when N is limiting”
e7“0.9% yield advantage under optimal growth conditions relative to the yield of wild type”
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 sterility did not change total nitrogen content in the plants.
- 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.
- 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.