Genomics and Applied Biology 2024, Vol.15, No.6, 296-306 http://bioscipublisher.com/index.php/gab 299 Drought stress during the podding stage can severely affect seed development, pod set, and grain filling, leading to reduced yield and quality. Drought-tolerant soybean varieties tend to exhibit better resilience in these aspects by maintaining higher rates of pod set and grain filling under water-limited conditions. This resilience is attributed to their ability to sustain physiological and metabolic functions during drought stress, ensuring better reproductive success and yield stability (Buezo etal., 2018; Wang et al., 2022b; Silva et al., 2022). By understanding these physiological responses and screening for drought-tolerant varieties, it is possible to develop soybean cultivars that can better withstand drought conditions, ensuring stable productivity and food security (Figure 2) (Tripathi et al., 2016). Figure 2 Phylogenetic analyses of the Group 10 (Ia) bHLH subfamily from soybean and Arabidopsis (Adopted from Tripathi et al., 2016) Image caption: a Neighbor Joining phylogenetic tree derived from a MUSCLE alignment of the full length proteins. SPEECHLESS, MUTE and FAMA-like genes are indicated. Numbers indicate bootstrap values from 1 000 replicates. Red dots denote 8-fold down-regulation and orange dots 5-fold. To the right of each protein is a cartoon of the protein architecture derived by MEME analysis. b The conserved protein motifs produced by MEME analysis (Adopted from Tripathi et al., 2016)
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