Dihidrohalkoni jabuke florizin i floretin kao nove alelopatske supstance
Apple dihydrochalcones phloridzin and phloretin as novel allelochemicals
2022
Document Type:
Book part (Published version)
,
© 2022 by the Institute of Molecular Genetics and Genetic Engineering, University of Belgrade
Metadata
Show full item recordAbstract:
Phloridzin and phloretin are dihydrochalcones highly specific to domestic apple (Malus × domestica
Borkh.) and other species from genus Malus. Auto-allelopathic potential of these phenolics was recognized in‘Apple Replant Disease’(ARD) characterized by stunted growth, reduced root system and low yields
in apple trees replanted on lands that previously supported apple orchards. Physiological basis of phloridzin and phloretin autotoxicity are ultrastructural and molecular alterations that include increased catalase, peroxidases and superoxide dismutase activities, raised malondialdehyde and proline contents, and
high expression of genes involved in cell defence system. The latest research on model plant Arabidopsis
thaliana indicates phytotoxicity of these dihydrochalcones towards other plant species. Phloretin inhibits
A. thaliana seedlings growth and development inducing agravitropic phenotype and morphological and
ultrastructural malformations in treated seedlings. Altered expression of CDKA1;1, CDKB2;1, CYCA3;1 and
CYCB2;4 cell cycle genes and genes involved in auxin homeostasis (PINs, AUX1, LAX3, ABCBs, TAA1 and YUCs)
and gibberellin biosynthesis (GA20ox2 and GA3ox1) are in the physiological bases of phloretin phytotoxicity. This mechanism makes phloretin a prospective candidate for an eco-friendly bioherbicide and paves
the way for further research of phloretin role in ARD
Keywords:
allelopathy; dihydrochalcones; apple (Malus × domestica Borkh.); phenolics; phloretin; phloridzinSource:
Trends in Molecular Biology, 2022, 2, 223-232Funding / projects:
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200007 (University of Belgrade, Institute for Biological Research 'Siniša Stanković') (RS-MESTD-inst-2020-200007)