Genome-wide analysis of potassium transport genes in Gossypium raimondii suggest a role of GrHAK/KUP/KT8, GrAKT2.1 and GrAKT1.1 in response to abiotic stress

Transcriptome-Wide Analysis Revealed the Potential of the High-Affinity Potassium Transporter (HKT) Gene Family in Rice Salinity Tolerance via Ion Homeostasis

“…Similarly, we also noted that a maximum number of HKT proteins that consisted of five or less motifs were found in subfamily V. The results further noted that the physicochemical properties of all HKT proteins were similar in each subfamily. These results suggest that HKT proteins shared a close evolutionary relationship during biological evolution in plants [ 45 , 46 ]. The intron–exon distribution revealed that most HKT genes possessed two exons and one intron ( Figure 2 ), further confirming that the HKT genes may have close evolutionary relationships in plants [ 47 ].…”

Genome-wide identification and multiple abiotic stress transcript profiling of potassium transport gene homologs in Sorghum bicolor

“…Sorghum has 47 K + transporter gene homologs (Table 1 and Figure 1) in comparison with 43 in Gossypium raimondii, (Azeem et al, 2022), 39 in Cajanus cajan (Siddique et al, 2021), and 36 in Cicer arietinum (Azeem et al, 2018). Nevertheless, these numbers are lower than that of Glycine max, where 70 homologs have been detected (Rehman et al, 2017), and 49 in Oryza sativa (Amrutha et al, 2007).…”

“…The 27 genes encoding HAK transporters in Sorghum (Figure 1) are similar in the number of HAK encoding genes detected in Zea mays and Hordeum vulgare (Zhang et al, 2012;Cai et al, 2021). Triticum aestivum and Pyrus betulifolia have 56 HAK transporters each (Cheng et al, 2018;Li Y. et al, 2018) followed by 41 in Nicotiana tabacum (Song et al, 2019), 31 in Populus trichocarpa (He et al, 2012), 30 in Saccharum spontaneum (Feng et al, 2020b), 29 in Glycine max (Rehman et al, 2017), 26 in Oryza sativa (Amrutha et al, 2007), 22 in Salix purpurea and Ipomoea batatas (Liang et al, 2020;Jin et al, 2021), 21 in Populus trichocarpa, Prunus persica, Manihot esculenta, and Camellia sinensis (He et al, 2012;Song et al, 2015;Ou et al, 2018;Yang T. et al, 2020), 19 in Solanum lycopersicum (Hyun et al, 2014), 17 in Oryza sativa and Cajanus cajan (Banuelos et al, 2002;Siddique et al, 2021), 16 in Prunus persica and Gossypium raimondii (Song et al, 2015;Azeem et al, 2022), and 13 in Arabidopsis thaliana (Ahn et al, 2004). These studies indicate that K + transport genes are highly conserved in plants during evolution.…”

“…Sorghum has shared 4 HKT encoding genes with Glycine max (Rehman et al, 2017). Oryza sativa has 8 HKTs, followed by 4 in Sorghum bicolor and Glycine max, 2 HKTs in Gossypium raimondii, Cajanus cajan, and Cicer arietinum (Amrutha et al, 2007;Rehman et al, 2017;Azeem et al, 2018Azeem et al, , 2022Siddique et al, 2021). Glycine max has the highest number of KEA transporters (12) (Rehman et al, 2017), followed by 7 KEAs in Gossypium raimondii (Azeem et al, 2022), 6 KEAs in Cicer arietinum and Cajanus cajan (Azeem et al, 2018;Siddique et al, 2021), but 2 KEAs in sorghum, and 1 KEA in Oryza sativa (Amrutha et al, 2007).…”

“…Analysis of HAK/KUP/KT transporters on a genome scale has been carried out in Oryza sativa (Banuelos et al, 2002), Arabidopsis thaliana (Ahn et al, 2004), Populus trichocarpa (He et al, 2012), Zea mays (Zhang et al, 2012), Solanum lycopersicum (Hyun et al, 2014), Prunus persica (Song et al, 2015), Triticum aestivum (Cheng et al, 2018), Pyrus betulifolia (Li Y. et al, 2018), Manihot esculenta (Ou et al, 2018), Nicotiana tabacum (Song et al, 2019), Saccharum spontaneum (Feng et al, 2020b), Gossypium , and Ipomoea batatas (Jin et al, 2021). Genome-wide analysis of K + transport gene family has been reported in Oryza sativa (Amrutha et al, 2007), Glycine max (Rehman et al, 2017), Cicer arietinum (Azeem et al, 2018), Cajanus cajan (Siddique et al, 2021), and Gossypium raimondii (Azeem et al, 2022) but not in Sorghum bicolor.…”