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Literature summary for 1.3.7.4 extracted from

  • Wu, J.; Cheng, J.; Xu, C.; Qi, S.; Sun, W.; Wu, S.
    AUREA maintains the balance between chlorophyll synthesis and adventitious root formation in tomato (2020), Hortic. Res., 7, 166 .
    View publication on PubMedView publication on EuropePMC
Search for more literature for 1.3.7.4

Application

Application Comment Organism
biotechnology the flooding (rf) mutation identified may provide a target for biotechnological renovation of tomato germplasm in future breeding Solanum lycopersicum

Cloned(Commentary)

Cloned (Comment) Organism
gene AUREA (AU), quantitative real-time RT-PCR enzyme expression analysis in wild-type and mutant seedlings Solanum lycopersicum

Protein Variants

Protein Variants Comment Organism
additional information the flooding (rf) mutation is analysed in the tomato gene AUREA (AU), it not only led to leaf chlorosis but also causes the spontaneous formation of adventitious roots (ARs) on stems. Under flooding stress, au mutants extensively form ARs along the stem, while wild-type plants produce ARs only at the root-shoot junction. After submergence for 7 days, the resistant to flooding (rf) mutants show higher sensitivity to flooding regarding AR initiation compared to wild-type. Mutation of the AU gene appears to have minimal impact on tomato growth and fruit yield. The flooding resistance of rf mutants mainly results from the accumulation of heme and enhanced HO-1 activity, both of which function in the phytochrome synthesis pathway. In addition, the exchange of substances, including heme, between leaves and stems accounts for AR formation on stems Solanum lycopersicum

Metals/Ions

Metals/Ions Comment Organism Structure
Fe2+ in cofactor ferrdoxin Solanum lycopersicum

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
biliverdin IXalpha + 2 reduced ferredoxin Solanum lycopersicum
-
 (3Z)-phytochromobilin + 2 oxidized ferredoxin
-
 ?

Organism

Organism UniProt Comment Textmining
Solanum lycopersicum A0A3Q7E952 cultivar Micro-Tom
-

Source Tissue

Source Tissue Comment Organism Textmining
leaf
-
 Solanum lycopersicum
-
root adventitious roots on stems, primordia Solanum lycopersicum
-
seedling
-
 Solanum lycopersicum
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stem
-
 Solanum lycopersicum
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
biliverdin IXalpha + 2 reduced ferredoxin
-
 Solanum lycopersicum (3Z)-phytochromobilin + 2 oxidized ferredoxin
-
 ?

Synonyms

Synonyms Comment Organism
AUREA
-
 Solanum lycopersicum
phytochromobilin synthase
-
 Solanum lycopersicum
PphiB synthase
-
 Solanum lycopersicum
Solyc01 g008930
-
 Solanum lycopersicum

Cofactor

Cofactor Comment Organism Structure
Ferredoxin
-
 Solanum lycopersicum
heme heme might play roles in adventitious roots initiation via long-distance transport from leaves to stems Solanum lycopersicum

Expression

Organism Comment Expression
Solanum lycopersicum HO-1 activity positively impacts AR abundance up

General Information

General Information Comment Organism
malfunction a recessive mutant, exhibiting highly enhanced submergence resistance, is identified. Phenotypical analyses show that this resistant to flooding (rf) mutant displays slightly chlorotic leaves and spontaneous initiation of adventitious roots (ARs) on stems. The mutation is mapped to the phytochromobilin synthase gene AUREA (AU), in which a single amino acid substitution from asparagine to tyrosine is found. Temporal coincidence of the two phenotypes is evidenced in the rf mutant: chlorosis and spontaneous AR formation, revealing that AU functions by maintaining heme homeostasis. Mutation of the AU gene appears to have minimal impact on tomato growth and fruit yield. The rf mutant is highly resistant to waterlogging in contrast to the wild-type, phenotypes, overview. Active HO-1 is necessary for the scion of rf to stimulate ARs in the stock of wild-type, but there is insufficient HO-1 in the wild-type hypocotyls to initiate AR primordium Solanum lycopersicum
metabolism enzyme phytochromobilin synthase function in the heme pathway in tetrapyrrole metabolism, overview Solanum lycopersicum
physiological function in addition to the classic function of the enzyme phytochromobilin synthase (gene AUREA, AU), in phytochrome and chlorophyll biogenesis in leaves, a role in mediating adventitious roots (AR) formation on stems is uncovered. Genetic evidence for the involvement of the AU-heme oxygenase-1-heme pathway in AR initiation is found in tomato. Dual roles of phytochromobilin synthase in chlorophyll synthesis and AR primordia initiation, overview. Communication between leaves and hypocotyls is responsible for AR initiation Solanum lycopersicum