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Literature summary for 3.2.1.15 extracted from

  • Huang, L.; Ye, Y.; Zhang, Y.; Zhang, A.; Liu, T.; Cao, J.
    BcMF9, a novel polygalacturonase gene, is required for both Brassica campestris intine and exine formation (2009), Ann. Bot., 104, 1339-1351.
    View publication on PubMedView publication on EuropePMC

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
polygalacturonate + H2O Brassica rapa subsp. oleifera
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oligogalacturonates
-
?

Organism

Organism UniProt Comment Textmining
Brassica rapa subsp. oleifera
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subspecies Brassica campestris chinensis, synonym Brassica rapa chinensis
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Source Tissue

Source Tissue Comment Organism Textmining
pollen MF9 is expressed in particular in the tapetum and microspore during the late stages of pollen development Brassica rapa subsp. oleifera
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
polygalacturonate + H2O
-
Brassica rapa subsp. oleifera oligogalacturonates
-
?

Synonyms

Synonyms Comment Organism
male fertility 9
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Brassica rapa subsp. oleifera
MF9
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Brassica rapa subsp. oleifera

General Information

General Information Comment Organism
malfunction antisense RNA transgenic plants that display decreased expression of MF9 show pollen morphological defects that result in reduced pollen germination efficiency. Inhibition of MF9 also results in break-up of the previously formed tectum and baculae from the beginning of the binucleate stage as a result of premature degradation of tapetum Brassica rapa subsp. oleifera
physiological function MF9 may act as a co-ordinator in the late stages of tapetum degeneration, and subsequently in the regulation of wall material secretion and, in turn, exine formation. BcMF9 may also play a role in intine formation, possibly via regulation of the dynamic metabolism of pectin Brassica rapa subsp. oleifera