Editorial to Special Issue "Plant-Microbe Interactions"Editorial

Martin Janda, Tetiana Kalachova

Biologia plantarum 68:50-51, 2024 | DOI: 10.32615/bp.2024.006  

Plant secondary metabolites: flavonoids and their glycosylation modificationReviews

A.J. Zhao, R. Li, W.Y. Guo, K. Lei, L.S. Ji, P. Li

Biologia plantarum 68:39-49, 2024 | DOI: 10.32615/bp.2024.002  

Flavonoids are a class of phenolic compounds that are widely distributed in nature. They have a variety of physiological and pharmacological activities. They exist in free form or in the form of glycosides. The glycosylation occurs by glycosyltransferases, which is a common modification of plant secondary metabolites and the last step of their biosynthesis. Glycosylation can increase the diversity of the structure and function of flavonoids, and is currently a research hotspot. Based on the classification of flavonoids, this paper describes and summarizes the biotransformation and characteristics of glycosylation modification of flavonoids with different...

The effect of mulching materials on the arbuscular mycorrhiza fungi root colonisation, peroxidase activity, and chlorophyll content in Lactuca sativaSpecial Issue: Plant-Microbe Interactions

K. Fekete, A. Geösel, S. Kecskeméti, Z. Pap

Biologia plantarum 68:31-38, 2024 | DOI: 10.32615/bp.2023.036  

Lettuce is one of our most important leaf vegetables that can be cultivated safely in organic farming, which is not only pesticide-free, but also aims to maintain and stimulate the presence of naturally occurring beneficial organisms, such as algae, mosses, bacteria, or arbuscular mycorrhiza (AM) fungi. These organisms are all beneficial for soil life and nutrient decomposition. The positive effects of beneficial microorganisms could be enhanced by mulching which is a widely used practice in organic farming. Mulching may also increase soil nutrient substance after decomposition and inhibit weed growth. In our experiment, we sought to determine the...

Putrescine priming effects on chlorophyll fluorescence, antioxidant enzyme activity, and primary metabolite accumulation in maize seedlings under water deficitOriginal Papers

C.C. Toledo, A.C.C. Da Silva, M.C. Del Peloso, M.A. Leite, L.A.A. Bressanin, G. EsteveS, P.C. Magalhães, T.C. De Souza, P.R. Dos Santos-Filho

Biologia plantarum 68:22-30, 2024 | DOI: 10.32615/bp.2023.035  

This study aimed to evaluate the effect of putrescine priming on the initial growth, chlorophyll fluorescence, primary metabolites accumulation, and antioxidant enzyme activities in two maize hybrids with contrasting drought tolerances. Seeds of Zea mays L. hybrids DKB 390 (drought tolerant) and BRS 1030 (drought sensitive) were primed with putrescine (10 or 100 µM). Paper rolls moistened with distilled water or mannitol (-0.6 MPa) were maintened at 30°C for 7 d. The growth parameters were higher in the DKB hybrid than in the BRS hybrid. Putrescine priming (10 µM) promoted the root growth of BRS at levels similar to those of...

Auxins and environmental factors regulate root gravitropismReviews

Z. Tang, Y. Zhang, Y. Ma, D. Zhao, J. Dong, H. Zhang

Biologia plantarum 68:12-21, 2024 | DOI: 10.32615/bp.2023.016  

Roots are important for plant anchoring, water and nutrient absorption, and other physiological processes. Gravity is a primary determinant of the spatial distribution of plant roots in the soil. Therefore, in-depth understanding of the molecular mechanisms and biochemical networks of root responses to gravity has both theoretical and practical significance in guiding the genetic improvement of plants. Gravitropism, the process through which plants sense the direction of gravity and respond by making the roots grow downward and the stem grow upward, has been widely studied in roots. The perception of gravity and the gravitational growth of roots, key...

Comparative analysis of bioinformatic tools to predict and quantify active circular RNAs during grape cluster developmentOriginal Papers

S. Ranjbar, A. Emamjomeh, M. Ebrahimi, A. Ghorbani, E. Ebrahimie, Y. Shiri

Biologia plantarum 68:1-11, 2024 | DOI: 10.32615/bp.2023.038  

Circular RNAs (circRNAs) are relatively new members of the RNA world and can contribute to crucial biological functions. CircRNAs have tissue-specific expression profiles depending on cell type and developmental stage. In Sistan region cultivated grapes are seedless but have small berries. The compact clusters are another notable characteristic of these grape cultivars, which negatively impacts their marketability. In this study, we aimed to identify the circRNAs that are active in cluster formation and investigated the effects of gibberellin treatment on their expression. Eight detection tools were used to predict the expressed circRNAs. Reliable...