Figure 5.

Schematic representation of the signaling pathways involving auxin, DES (cysteine desulfhydrase), NO (Nitric oxide), and hydrogen sulfide (H₂S) interaction during lateral root formation in plants. The interaction between H₂S and NO under the influence of auxin participates in the development of the lateral root via modulating the expressions and activities of different effector genes or proteins in a framework of regulatory pathways to permit root growth. miRNA: Micro RNA; ARFs: Auxin Response Factors; CDKA1: Cyclin-Dependent Kinases gene; CYCA2: cell cycle regulatory gene; KRP2: Kip-Related Protein 2; NR: Nitrate reductase; LR: lateral root.