ArticleBMC genomics2017
Novel mutant alleles of the starch synthesis gene TaSSIVb-D result in the reduction of starch granule number per chloroplast in wheat.
Article in BMC genomics, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.
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24 citing papers in PubMed, 38 citations in OpenAlex.
- Advances in gene cloning and functional genomics approaches for wheat (Triticum aestivum L.) improvement.The plant genome · 2026Review
- Characterization of wheat oligo-tiller mutant ot2 and fine mapping of the mutant gene Taot2.The plant genome · 2025Article
- Grain Weight and Taste Quality inPlants (Basel, Switzerland) · 2025Article
- Article
- Dynamic Change in Starch Biosynthetic Enzymes Complexes during Grain-Filling Stages in BEIIb Active and Deficient Rice.International journal of molecular sciences · 2022Article
- Wheat genomic study for genetic improvement of traits in China.Science China. Life sciences · 2022Review
- Unraveling novel and rare mutations for alpha-amylase and key transcription factors in EMS-induced wheat mutants for amylose by TILLING.Molecular biology reports · 2022Article
- Reverse genetic approaches for breeding nutrient-rich and climate-resilient cereal and food legume crops.Heredity · 2022Article
- Resistant starch formation in rice: Genetic regulation and beyond.Plant communications · 2022Review
- Disruption ofInternational journal of molecular sciences · 2022Article
- CBM20CP, a novel functional protein of starch metabolism in green algae.Plant molecular biology · 2022Article
- Starch synthases SSIIa and GBSSI control starch structure but do not determine starch granule morphology in the absence of SSIIIa and SSIVb.Plant molecular biology · 2022Article
- Starch biosynthesis in cereal endosperms: An updated review over the last decade.Plant communications · 2021Review
- Posttranslational Modification of Waxy to Genetically Improve Starch Quality in Rice Grain.International journal of molecular sciences · 2021Review
- A review of starch biosynthesis in cereal crops and its potential breeding applications in rice (PeerJ · 2021Article
- Identification of Rice Blast Loss-of-Function Mutant Alleles in the Wheat Genome as a New Strategy for Wheat Blast Resistance Breeding.Frontiers in genetics · 2021Article
- STARCH SYNTHASE5, a Noncanonical Starch Synthase-Like Protein, Promotes Starch Granule Initiation in Arabidopsis.The Plant cell · 2020Article
- Functional mutation allele mining of plant architecture and yield-related agronomic traits and characterization of their effects in wheat.BMC genetics · 2019Article
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Authors and funding
10 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundTransient starch provides carbon and energy for plant growth, and its synthesis is regulated by the joint action of a series of enzymes. Starch synthesis IV (SSIV) is one of the important starch synthase isoforms, but its impact on wheat starch synthesis has not yet been reported due to the lack of mutant lines.
resultsUsing the TILLING approach, we identified 54 mutations in the wheat gene TaSSIVb-D, with a mutation density of 1/165 Kb. Among these, three missense mutations and one nonsense mutation were predicted to have severe impacts on protein function. In the mutants, TaSSIVb-D was significantly down-regulated without compensatory increases in the homoeologous genes TaSSIVb-A and TaSSIVb-B. Altered expression of TaSSIVb-D affected granule number per chloroplast; compared with wild type, the number of chloroplasts containing 0-2 granules was significantly increased, while the number containing 3-4 granules was decreased. Photosynthesis was affected accordingly; the maximum quantum yield and yield of PSII were significantly reduced in the nonsense mutant at the heading stage.
conclusionsThese results indicate that TaSSIVb-D plays an important role in the formation of transient starch granules in wheat, which in turn impact the efficiency of photosynthesis. The mutagenized population created in this study allows the efficient identification of novel alleles of target genes and could be used as a resource for wheat functional genomics.
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