Journal
NATURE GENETICS
Volume 47, Issue 12, Pages 1489-+Publisher
NATURE PORTFOLIO
DOI: 10.1038/ng.3422
Keywords
-
Categories
Funding
- Office of Basic Energy Sciences of the US Department of Energy [DE-FG02-04ER15542]
- National Science Foundation [IOS-1258018, IOS-1116561, IOS-1025976, IOS-1238014]
- USDA-NIFA [2010-04228]
- Division Of Integrative Organismal Systems
- Direct For Biological Sciences [1238189, 1258018] Funding Source: National Science Foundation
- Division Of Integrative Organismal Systems
- Direct For Biological Sciences [1116561, 1258103, 1238014] Funding Source: National Science Foundation
- Div Of Molecular and Cellular Bioscience
- Direct For Biological Sciences [1025976] Funding Source: National Science Foundation
Ask authors/readers for more resources
Carbohydrate import into seeds directly determines seed size and must have been increased through domestication. However, evidence of the domestication of sugar translocation and the identities of seed-filling transporters have been elusive. Maize ZmSWEET4c, as opposed to its sucrose-transporting homologs, mediates transepithelial hexose transport across the basal endosperm transfer layer (BETL), the entry point of nutrients into the seed, and shows signatures indicative of selection during domestication. Mutants of both maize ZmSWEET4c and its rice ortholog OsSWEET4 are defective in seed filling, indicating that a lack of hexose transport at the BETL impairs further transfer of sugars imported from the maternal phloem. In both maize and rice, SWEET4 was likely recruited during domestication to enhance sugar import into the endosperm.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available