Salicylic Acid, Senescence, and Heterosis

Smith, Lisa M.

doi:10.1104/pp.19.00260

Cited by 6 publications

(5 citation statements)

References 19 publications

(20 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Gonzalez-Bayon et al (2019) observed that reduction of SA level in an Arabidopsis thaliana accession through introduction of a bacterial gene (i.e., NahG) resulted in plant size enhancement after 3 weeks of growth. The TL1 BINDING TRANSCRIPTION FACTOR1 is an important gene regulating the SA-induced balance among plant's defense and growth pathways (Smith, 2019), and its expression levels were significantly suppressed in Arabidopsis F1s (derived from C24 x Ler) and C24 NahG individuals, which may be the reason for growth enhancement. Similarly, the down-regulation of several genes (e.g., WRKY53, ORESARA1, and NAC-CONTAINING PROTEIN 29) associated with SA-induced chlorophyll degradation (senescence) in these individuals could be the regulator of the delayed senescence, thereby causing a longer period of photosynthesis in leaves.…”

Section: Discussionmentioning

confidence: 99%

Application of potassium nitrate and salicylic acid improves grain yield and related traits by delaying leaf senescence in Gpc-B1 carrying advanced wheat genotypes

et al. 2023

View full text Add to dashboard Cite

Grain protein content (GPC) is an important quality trait that effectively modulates end-use quality and nutritional characteristics of wheat flour-based food products. The Gpc-B1 gene is responsible for the higher protein content in wheat grain. In addition to higher GPC, the Gpc-B1 is also generally associated with reduced grain filling period which eventually causes the yield penalty in wheat. The main aim of the present study was to evaluate the effect of foliar application of potassium nitrate (PN) and salicylic acid (SA) on the physiological characteristics of a set of twelve genotypes, including nine isogenic wheat lines carrying the Gpc-B1 gene and three elite wheat varieties with no Gpc-B1 gene, grown at wheat experimental area of the Department of Plant Breeding and Genetics, PAU, Punjab, India. The PN application significantly increased the number of grains per spike (GPS) by 6.42 grains, number of days to maturity (DTM) by 1.03 days, 1000-grain weight (TGW) by 1.97 g and yield per plot (YPP) by 0.2 kg/plot. As a result of PN spray, the flag leaf chlorophyll content was significantly enhanced by 2.35 CCI at anthesis stage and by 1.96 CCI at 10 days after anthesis in all the tested genotypes. Furthermore, the PN application also significantly increased the flag leaf nitrogen content by an average of 0.52% at booting stage and by 0.35% at both anthesis and 10 days after anthesis in all the evaluated genotypes. In addition, the yellow peduncle colour at 30 days after anthesis was also increased by 19.08% while the straw nitrogen content was improved by 0.17% in all the genotypes. The preliminary experiment conducted using SA demonstrated a significant increase in DTM and other yield component traits. The DTM increased by an average of 2.31 days, GPS enhanced by approximately 3.17 grains, TGW improved by 1.13g, and YPP increased by 0.21 kg/plot. The foliar application of PN and SA had no significant effect on GPC itself. The findings of the present study suggests that applications of PN and SA can effectively mitigate the yield penalty associated with Gpc-B1 gene by extending grain filling period in the wheat.

show abstract

Section: Discussionmentioning

confidence: 99%

Application of potassium nitrate and salicylic acid improves grain yield and related traits by delaying leaf senescence in Gpc-B1 carrying advanced wheat genotypes

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Upregulated genes may play a significant role in defense against stress-inducing factors. However, downregulation of a higher number of genes may limit the defense responses that may enhance the plant growth ( Karasov et al, 2017 ; Smith, 2019 ), although it is not the absolute truth ( Campos et al, 2016 ). A gene ALD1 was upregulated in the ethylene metabolic process among the 14 genes.…”

Section: Discussionmentioning

confidence: 99%

Transcriptome Analysis Reveals a Gene Expression Pattern That Contributes to Sugarcane Bud Propagation Induced by Indole-3-Butyric Acid

Deng

et al. 2022

Front. Plant Sci.

View full text Add to dashboard Cite

Sugarcane is a cash crop that plays an integral part in the sugar industry. The Sustainable Sugarcane Initiative (SSI) has been adopted globally, ensuring enough and aiming for more yield, helping increase disease-free sugarcane cultivation. Single-bud seeds could be the best approach for sugarcane cultivation. Indole-3-butyric acid (IBA) is a rooting agent utilized significantly in seedling propagation. Greenhouse experiment results discovered the significant growth promotion in sugarcane seedlings and accumulation of plant hormones at 100 ppm IBA. Next, we performed transcriptomic analysis of sugarcane buds using RNA sequencing and compared their gene expression during root development due to affect of IBA (100 ppm). A total of 113,475 unigenes were annotated with an average length of 836 bp (N50 = 1,536). The comparative RNA-seq study between the control (CK) and IBA-treated (T) buds showed significant differentially expressed unigenes (494 upregulated and 2086 downregulated). The IBA influenced major biological processes including metabolic process, the cellular process, and single-organism process. For cellular component category, cell, cell part, organelle, membrane, and organelle part were mainly affected. In addition, catalytic activity and binding were primarily affected in the molecular function categories. Furthermore, the expression of genes related to plant hormones and signaling pathways was analyzed by qRT-PCR, which was consistent with the RNA-seq expression profile. This study provides new insights into the IBA response to the bud sprouting in sugarcane based on RNA sequencing, and generated information could help further research on breeding improvement of sugarcane.

show abstract

“…Moreover, the phosphorylation of SNF1-related protein kinase 2 is necessary for the kinase activity of downstream targets, which is related to abscisic acid biosynthesis ( Chen L. et al, 2018 ). Smith (2019) noted that a decrease in the salicylic acid level in hybrids with abnormally high salicylic acid level would promote the hybrid’s growth. By contrast, the salicylic acid-regulated defense genes of hybrids that show heterosis are downregulated.…”

Section: Hormone Regulation and Plant Heterosismentioning

confidence: 99%

Advances in Research on the Mechanism of Heterosis in Plants

Liu

Zhang

et al. 2021

Front. Plant Sci.

View full text Add to dashboard Cite

Heterosis is a common biological phenomenon in nature. It substantially contributes to the biomass yield and grain yield of plants. Moreover, this phenomenon results in high economic returns in agricultural production. However, the utilization of heterosis far exceeds the level of theoretical research on this phenomenon. In this review, the recent progress in research on heterosis in plants was reviewed from the aspects of classical genetics, parental genetic distance, quantitative trait loci, transcriptomes, proteomes, epigenetics (DNA methylation, histone modification, and small RNA), and hormone regulation. A regulatory network of various heterosis-related genes under the action of different regulatory factors was summarized. This review lays a foundation for the in-depth study of the molecular and physiological aspects of this phenomenon to promote its effects on increasing the yield of agricultural production.

show abstract

Salicylic Acid, Senescence, and Heterosis

Cited by 6 publications

References 19 publications

Application of potassium nitrate and salicylic acid improves grain yield and related traits by delaying leaf senescence in Gpc-B1 carrying advanced wheat genotypes

Application of potassium nitrate and salicylic acid improves grain yield and related traits by delaying leaf senescence in Gpc-B1 carrying advanced wheat genotypes

Transcriptome Analysis Reveals a Gene Expression Pattern That Contributes to Sugarcane Bud Propagation Induced by Indole-3-Butyric Acid

Advances in Research on the Mechanism of Heterosis in Plants

Contact Info

Product

Resources

About