ArticlePlant physiology2011
Starch-branching enzyme IIa is required for proper diurnal cycling of starch in leaves of maize.
Article in Plant physiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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Who cites it
16 citing papers in PubMed, 44 citations in OpenAlex.
- Beyond Branching: Unlocking the Catalytic Versatility of Branching Enzymes for the Design of Diverse α-Glucan Structures.Molecules (Basel, Switzerland) · 2026Review
- BE3 is the major branching enzyme isoform required for amylopectin synthesis in CFrontiers in plant science · 2023Article
- CRISPR-Cas9-mediated editing of starch branching enzymes results in altered starch structure in Brassica napus.Plant physiology · 2022Article
- Tissue-specific transcriptomics reveal functional differences in floral development.Plant physiology · 2022Article
- Molecular identification of the key starch branching enzyme-encoding geneHorticulture research · 2020Article
- Sugar metabolism as input signals and fuel for leaf senescence.Genes & genomics · 2019Review
- Article
- Formation of starch in plant cells.Cellular and molecular life sciences : CMLS · 2016Review
- Nitrogen Use Efficiency Is Mediated by Vacuolar Nitrate Sequestration Capacity in Roots of Brassica napus.Plant physiology · 2016Article
- Modification of starch metabolism in transgenic Arabidopsis thaliana increases plant biomass and triples oilseed production.Plant biotechnology journal · 2016Article
- Review
- Molecular Genetic Analysis of Glucan Branching Enzymes from Plants and Bacteria in Arabidopsis Reveals Marked Differences in Their Functions and Capacity to Mediate Starch Granule Formation.Plant physiology · 2015Article
- Article
- Article
- Osmosensitive changes of carbohydrate metabolism in response to cellulose biosynthesis inhibition.Plant physiology · 2012Article
- Deficiency of maize starch-branching enzyme I results in altered starch fine structure, decreased digestibility and reduced coleoptile growth during germination.BMC plant biology · 2011Article
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Authors and funding
6 authors at 2 institutions in 2 countries.
Funding
Abstract
Starch-branching enzyme (SBE), a glucosyl transferase, is required for the highly regular pattern of α-1,6 bonds in the amylopectin component of starch. In the absence of SBEIIa, as shown previously in the sbe2a mutant of maize (Zea mays), leaf starch has drastically reduced branching and the leaves exhibit a severe senescence-like phenotype. Detailed characterization of the maize sbe2a mutant revealed that SBEIIa is the primary active branching enzyme in the leaf and that in its absence plant growth is affected. Both seedling and mature sbe2a mutant leaves do not properly degrade starch during the night, resulting in hyperaccumulation. In mature sbe2a leaves, starch hyperaccumulation is greatest in visibly senescing regions but also observed in green tissue and is correlated to a drastic reduction in photosynthesis within the leaf. Starch granules from sbe2a leaves observed via scanning electron microscopy and transmission electron microscopy analyses are larger, irregular, and amorphous as compared with the highly regular, discoid starch granules observed in wild-type leaves. This appears to trigger premature senescence, as shown by an increased expression of genes encoding proteins known to be involved in senescence and programmed cell death processes. Together, these results indicate that SBEIIa is required for the proper diurnal cycling of transitory starch within the leaf and suggest that SBEIIa is necessary in producing an amylopectin structure amenable to degradation by starch metabolism enzymes.
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Registered trials
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