tie-dyed1 Regulates Carbohydrate Accumulation in Maize Leaves
نویسندگان
چکیده
منابع مشابه
tie-dyed1 Functions non-cell autonomously to control carbohydrate accumulation in maize leaves.
The tie-dyed1 (tdy1) mutant of maize (Zea mays) produces chlorotic, anthocyanin-accumulating regions in leaves due to the hyperaccumulation of carbohydrates. Based on the nonclonal pattern, we propose that the accumulation of sucrose (Suc) or another sugar induces the tdy1 phenotype. The boundaries of regions expressing the tdy1 phenotype frequently occur at lateral veins. This suggests that la...
متن کاملTie-dyed2 functions with tie-dyed1 to promote carbohydrate export from maize leaves.
Regulation of carbon partitioning is essential for plant growth and development. To gain insight into genes controlling carbon allocation in leaves, we identified mutants that hyperaccumulate carbohydrates. tie-dyed2 (tdy2) is a recessive mutant of maize (Zea mays) with variegated, nonclonal, chlorotic leaf sectors containing excess starch and soluble sugars. Consistent with a defect in carbon ...
متن کاملTie-dyed1 encodes a novel, phloem-expressed transmembrane protein that functions in carbohydrate partitioning.
Carbon is partitioned between export from the leaf and retention within the leaf, and this process is essential for all aspects of plant growth and development. In most plants, sucrose is loaded into the phloem of carbon-exporting leaves (sources), transported through the veins, and unloaded into carbon-importing tissues (sinks). We have taken a genetic approach to identify genes regulating car...
متن کاملDetermining the role of Tie-dyed1 in starch metabolism: epistasis analysis with a maize ADP-glucose pyrophosphorylase mutant lacking leaf starch.
In regions of their leaves, tdy1-R mutants hyperaccumulate starch. We propose 2 alternative hypotheses to account for the data, that Tdy1 functions in starch catabolism or that Tdy1 promotes sucrose export from leaves. To determine whether Tdy1 might function in starch breakdown, we exposed plants to extended darkness. We found that the tdy1-R mutant leaves retain large amounts of starch on pro...
متن کاملby Wounding in Maize Leaves
wall carbohydrates, and organic acids. The hydroxycinnamic acid amides with tyramine and octopamine are also common types of conjugates.2) The formation of the amides serves a defensive purpose in solanaceous plants such as potato,3・4) tobacco5) and tomato.6) Various forms of stress, including physical injury, infection with pathogens and elicitor-treatments, induce the accumulation of hydroxyc...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 2006
ISSN: 1532-2548
DOI: 10.1104/pp.106.090381