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- Title
Novel Effects of Leonardite-Based Applications on Sugar Beet.
- Authors
Della Lucia, Maria C.; Bertoldo, Giovanni; Broccanello, Chiara; Maretto, Laura; Ravi, Samathmika; Marinello, Francesco; Sartori, Luigi; Marsilio, Giovanni; Baglieri, Andrea; Romano, Alessandro; Colombo, Mauro; Magro, Francesco; Campagna, Giovanni; Concheri, Giuseppe; Squartini, Andrea; Stevanato, Piergiorgio
- Abstract
The present study aimed to explore the effects of foliar application of a leonardite-based product on sugar beet (Beta vulgaris L.) plants grown in the field. The approach concerned the evaluation of the community compositional structure of plant endophytic bacteria through a metabarcoding approach, the expression level of a gene panel related to hormonal metabolism and signaling, and the main sugar beet productivity traits. Results indicated that plants treated with leonardite (dosage of 2,000 ml ha–1, dilution 1:125, 4 mg C l–1) compared with untreated ones had a significant increase (p < 0.05) in (i) the abundance of Oxalicibacterium spp., recognized to be an endophyte bacterial genus with plant growth-promoting activity; (ii) the expression level of LAX2 gene, coding for auxin transport proteins; and (iii) sugar yield. This study represents a step forward to advance our understanding of the changes induced by leonardite-based biostimulant in sugar beet.
- Subjects
BEETS; CARRIER proteins; ENDOPHYTIC bacteria; PROTEIN transport; PLANT anatomy; GENES; PLANT growth promoting substances; SUGAR beets
- Publication
Frontiers in Plant Science, 2021, Vol 11, pN.PAG
- ISSN
1664-462X
- Publication type
Article
- DOI
10.3389/fpls.2021.646025