The tissue-specific and developmentally regulated expression patterns of the<i>SAUR41</i>subfamily of<i>SMALL AUXIN UP RNA</i>genes

Qiu, Ting; Chen, Yong; Li, Miaomiao; Kong, Yingying; Zhu, Yibing; Han, Ning; Bian, Hongwu; Zhu, Maoyan; Wang, Junhui

doi:10.4161/psb.25283

Cited by 39 publications

(25 citation statements)

References 16 publications

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“…However, since all three physically interact with PM H + -ATPases (Figs 4C and S7 ), an attractive hypothesis is that they are recruited to the plasma membrane via their interaction with these H + pumps. In regard to the non-plasma membrane family members, it is interesting to note that some SAUR proteins have also been shown to reside in the nucleus (SAUR32 [ 44 ] and SAUR36 [ 45 ]) and cytosol (SAUR32 [ 44 ], SAUR40 [ 46 ], SAUR41 [ 47 ], SAUR55 [ 45 ], and SAUR71 [ 46 ]). However, the functions of SAUR proteins in these cellular compartments remain to be elucidated.…”

Section: Discussionmentioning

confidence: 99%

A subset of plasma membrane-localized PP2C.D phosphatases negatively regulate SAUR-mediated cell expansion in Arabidopsis

et al. 2018

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The plant hormone auxin regulates numerous growth and developmental processes throughout the plant life cycle. One major function of auxin in plant growth and development is the regulation of cell expansion. Our previous studies have shown that SMALL AUXIN UP RNA (SAUR) proteins promote auxin-induced cell expansion via an acid growth mechanism. These proteins inhibit the PP2C.D family phosphatases to activate plasma membrane (PM) H+-ATPases and thereby promote cell expansion. However, the functions of individual PP2C.D phosphatases are poorly understood. Here, we investigated PP2C.D-mediated control of cell expansion and other aspects of plant growth and development. The nine PP2C.D family members exhibit distinct subcellular localization patterns. Our genetic findings demonstrate that the three plasma membrane-localized members, PP2C.D2, PP2C.D5, and PP2C.D6, are the major regulators of cell expansion. These phosphatases physically interact with SAUR19 and PM H+-ATPases, and inhibit cell expansion by dephosphorylating the penultimate threonine of PM H+-ATPases. PP2C.D genes are broadly expressed and are crucial for diverse plant growth and developmental processes, including apical hook development, phototropism, and organ growth. GFP-SAUR19 overexpression suppresses the growth defects conferred by PP2C.D5 overexpression, indicating that SAUR proteins antagonize the growth inhibition conferred by the plasma membrane-localized PP2C.D phosphatases. Auxin and high temperature upregulate the expression of some PP2C.D family members, which may provide an additional layer of regulation to prevent plant overgrowth. Our findings provide novel insights into auxin-induced cell expansion, and provide crucial loss-of-function genetic support for SAUR-PP2C.D regulatory modules controlling key aspects of plant growth.

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Section: Discussionmentioning

confidence: 99%

A subset of plasma membrane-localized PP2C.D phosphatases negatively regulate SAUR-mediated cell expansion in Arabidopsis

et al. 2018

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“…The fruit size is predominantly determined by the number and volume of cells, which is the result of cell division and cell expansion during organogenesis. WAKL14 was linked to markers CNBJag2.3376 and CNBJag2.3378 associated with FSI and is a member of the wall‐associated kinases (WAK) family of proteins, which are tightly associated with cell walls and play roles in cell expansion (Qiu et al., 2013; Verica & He, 2002). Plant hormones are known to modulate growth and development at various stages of the developing fruit.…”

Section: Discussionmentioning

confidence: 99%

Genome‐wide association studies of fruit quality traits in jujube germplasm collections using genotyping‐by‐sequencing

Hou

Zhang

et al. 2020

The Plant Genome

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Chinese jujube (Ziziphus jujuba Mill.) is an important fruit crop and harbors many highly diverse traits of potential economic importance. Fruit size, stone size, and fruit cracking have an important influence on the commercial value of jujube. This study is the first to conduct a genome-wide association study (GWAS) on 180 accessions of jujube and focuses on locating single-nucleotide polymorphisms (SNPs) associated with nine important fruit quality traits. Genotyping was performed using genotyping-by-sequencing and 4651 high-quality SNPs were identified. A genetic diversity analysis revealed the presence of three distinct groups, and rapid linkage disequilibrium decay was observed in this jujube population. Using a mixed linear model, a total of 45 significant SNPtrait associations were detected, among which 33 SNPs had associations with fruit size-related traits, nine were associated with stone size-related traits, and three with fruit cracking-related traits. In total, 21 candidate genes involved in cell expansion, abiotic stress responses, hormone signaling, and growth development were identified from the genome sequences of jujube. These results are useful as basic data for GWAS of other jujube traits, and these significant SNP loci and candidate genes should aid marker-assisted breeding and genomic selection of improved jujube cultivars.

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“…SAUR-72 has role in regulation of cell expansion, root meristem patterning and auxin transport. In a study conducted on tissue-specific and developmentally regulated expression patterns of SAUR genes, it was found that SAUR72 was highly expressed in the steles of Arabidopsis roots and hypocotyls [49]. Up-regulated HSP 17.1 is a part of small heat shock protein (HSP20) family.…”

Section: Functional Allocation Of Degsmentioning

confidence: 99%

WITHDRAWN: Deep expression scrutiny provides genetic basis of aluminium tolerance in wild (Lens nigrican) and cultivated lentil (Lens culinaris Medik.)

Singh

Sharma

et al. 2020

Preprint

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Background: Aluminium (Al) stress hinders crop productivity in acidic soils. Lentil contains rich source of protein and micronutrients and cultivated in different parts of world. To enhance knowledge about Al toxicity tolerance, present study emphasizes on mechanistic analysis of genes associated with Al stress through de novo transcriptomic analysis of tolerant (L-4602), wild (ILWL-15) and sensitive (BM-4) genotypes. Result: Illumina HiSeq 2500 platform evaluated contigs ranging from 15,305 to 18,861 for all the samples with N50 values of 1795 bp. Four annotation softwares revealed differential regulation of several genes where 30,158 genes were specifically up-regulated for combinations under Al stress conditions alone. Top up-regulated Differentially Expressed Genes (DEGs) in tolerant cultivar when compared to the sensitive one were found to be involved in protein transport as well as degradation, defences, cell growth and development. Wild v/s cultivar comparison revealed upregulation of wild DEGs that are involved in regulation of transcription in differentiating cells, pre-mRNA splicing, catalysis and protein ubiquitination. Based on assembled Unigenes, 89,722 high-quality SNPs and 39,874 SSRs were detected. Twelve selected genes were validated using qRT-PCR. KEGG pathway analysis extracted 8,757 GO annotation terms within molecular, cellular and biological processes. Pathway analysis indicated that organic acid synthesis and their transportation along with detoxification of ROS, an alternate pathway involving metacaspase-1,4,9 for programmed cell death were also significantly induced due to Al stress.Conclusion: Present study unveils the characterization of differential transcripts generated under Al stress indicating Al tolerance as a multiplex phenomenon which will directly widen crop improvement programmes for Al toxicity utilizing molecular approaches.

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The tissue-specific and developmentally regulated expression patterns of theSAUR41subfamily ofSMALL AUXIN UP RNAgenes

Cited by 39 publications

References 16 publications

A subset of plasma membrane-localized PP2C.D phosphatases negatively regulate SAUR-mediated cell expansion in Arabidopsis

A subset of plasma membrane-localized PP2C.D phosphatases negatively regulate SAUR-mediated cell expansion in Arabidopsis

Genome‐wide association studies of fruit quality traits in jujube germplasm collections using genotyping‐by‐sequencing

WITHDRAWN: Deep expression scrutiny provides genetic basis of aluminium tolerance in wild (Lens nigrican) and cultivated lentil (Lens culinaris Medik.)

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