{"title":"Salicylic Acid Enhances Growth, Photosynthetic Performance and Antioxidant Defense Activity Under Salt Stress in Two Mungbean [Vigna radiata (L.) R. Wilczek] Variety.","authors":"Esther Ogunsiji, Caroline Umebese, Edith Stabentheiner, Emmanuel Iwuala, Victor Odjegba, Ayoola Oluwajobi","doi":"10.1080/15592324.2023.2217605","DOIUrl":"10.1080/15592324.2023.2217605","url":null,"abstract":"<p><p>Salt is regarded as a main cause for reduced yield under challenging conditions. Mungbean, a valuable protein crop, is sensitive to salt stress, leading to yield shortage. The growth hormone, salicylic acid (SA), enhances several processes necessary to confer salt tolerance and relieves poor agricultural yield. Seeds of mungbean were initially pretreated with SA (0.5 mM) for 4 h before sowing, while under a cumulative combination of SA + salt regimes: control, SA, 100 mM, SA +100 mM, 200 mM and SA +200 mM. Our study examined photosynthesis parameters such as photosynthetic pigment concentration, chlorophyll <i>a</i> fluorescence, protein, proline, and antioxidant enzymes in plants subjected to single and combined SA + salt stress concentrations. The result showed a greater decline in SPAD and photosynthetic quantum yield under 200 mM NaCl at 43% in Var. 145 than in Var. 155 at 32% compared to 11% in SA +100 mM and 34% in SA + 200 mM treatments in both varieties. Var. 145 was found to be more sensitive to 100 and 200 mM NaCl salt stress. In Var. 155, chlorophyll <i>a</i> and chlorophyll <i>b</i> concentrations were higher under control 52%, SA + 100 mM 49%, and SA +200 mM 42% than in Var. 145 at 51%, 38%, and 31%. Protein and proline revealed a higher content in Var. 155 in contrast to the lower activity in Var. 145. The enhanced performance of the Var. 155 exposed to SA + salt stress was followed by an increase in the activities of peroxidase (POD), CAT while the activity of MDA revealed a significant increase in Var. 145 under 100 mM 43% and 200 mM 48% NaCl treatment compared to Var. 155, which had 38% and 34%. The above results suggest that SA-treated Var. 155 confers tolerance to salt stress and is accompanied with a high osmoprotectant responses as provided by SA in Var. 155 than Var. 145. The potency of SA in providing salt tolerance capacity to plants is a future research interest to maintain sustainable yield in mungbean seedlings.</p>","PeriodicalId":20232,"journal":{"name":"Plant Signaling & Behavior","volume":"18 1","pages":"2217605"},"PeriodicalIF":2.8,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10251775/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9608902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cyprian Osinde, Islam S Sobhy, David Wari, Son Truong Dinh, Yuko Hojo, Dandy A Osibe, Tomonori Shinya, Arthur K Tugume, Anthony M Nsubuga, Ivan Galis
{"title":"Comparative analysis of sorghum (C4) and rice (C3) plant headspace volatiles induced by artificial herbivory.","authors":"Cyprian Osinde, Islam S Sobhy, David Wari, Son Truong Dinh, Yuko Hojo, Dandy A Osibe, Tomonori Shinya, Arthur K Tugume, Anthony M Nsubuga, Ivan Galis","doi":"10.1080/15592324.2023.2243064","DOIUrl":"10.1080/15592324.2023.2243064","url":null,"abstract":"<p><p>Acute stress responses include release of defensive volatiles from herbivore-attacked plants. Here we used two closely related monocot species, rice as a representative C3 plant, and sorghum as a representative C4 plant, and compared their basal and stress-induced headspace volatile organic compounds (VOCs). Although both plants emitted similar types of constitutive and induced VOCs, in agreement with the close phylogenetic relationship of the species, several mono- and sesquiterpenes have been significantly less abundant in headspace of sorghum relative to rice. Furthermore, in spite of generally lower VOC levels, some compounds, such as the green leaf volatile (<i>Z</i>)-3-hexenyl acetate and homoterpene DMNT, remained relatively high in the sorghum headspace, suggesting that a separate mechanism for dispersal of these compounds may have evolved in this plant. Finally, a variable amount of several VOCs among three sorghum cultivars of different geographical origins suggested that release of VOCs could be used as a valuable resource for the increase of sorghum resistance against herbivores.</p>","PeriodicalId":20232,"journal":{"name":"Plant Signaling & Behavior","volume":" ","pages":"2243064"},"PeriodicalIF":2.8,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10730142/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10388827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hirotomo Takatsuka, Yuji Nomoto, Kesuke Yamada, Keito Mineta, Christian Breuer, Takashi Ishida, Ayumi Yamagami, Keiko Sugimoto, Takeshi Nakano, Masaki Ito
{"title":"MYB3R-SCL28-SMR module with a role in cell size control negatively regulates G2 progression in <i>Arabidopsis</i>.","authors":"Hirotomo Takatsuka, Yuji Nomoto, Kesuke Yamada, Keito Mineta, Christian Breuer, Takashi Ishida, Ayumi Yamagami, Keiko Sugimoto, Takeshi Nakano, Masaki Ito","doi":"10.1080/15592324.2022.2153209","DOIUrl":"10.1080/15592324.2022.2153209","url":null,"abstract":"<p><p>Cell size control is one of the prerequisites for plant growth and development. Recently, a GRAS family transcription factor, SCARECROW-LIKE28 (SCL28), was identified as a critical regulator for both mitotic and postmitotic cell-size control. Here, we show that <i>SCL28</i> is specifically expressed in proliferating cells and exerts its function to delay G2 progression during mitotic cell cycle in <i>Arabidopsis thaliana</i>. Overexpression of <i>SCL28</i> provokes a significant enlargement of cells in various organs and tissues, such as leaves, flowers and seeds, to different extents depending on the type of cells. The increased cell size is most likely due to a delayed G2 progression and accelerated onset of endoreplication, an atypical cell cycle repeating DNA replication without cytokinesis or mitosis. Unlike <i>DWARF AND LOW-TILLERING</i>, a rice ortholog of <i>SCL28</i>, SCL28 may not have a role in brassinosteroid (BR) signaling because sensitivity against brassinazole, a BR biosynthesis inhibitor, was not dramatically altered in <i>scl28</i> mutant and <i>SCL28</i>-overexpressing plants. Collectively, our findings strengthen a recently proposed model of cell size control by SCL28 and suggest the presence of diversified evolutionary mechanisms for the regulation and action of SCL28.</p>","PeriodicalId":20232,"journal":{"name":"Plant Signaling & Behavior","volume":" ","pages":"2153209"},"PeriodicalIF":2.8,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10761098/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10501266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Min Luo, Jing Gao, Ran Liu, ShiQi Wang, Guangzhi Wang
{"title":"Morphological and anatomical changes during dormancy break of the seeds of <i>Fritillaria taipaiensis</i>.","authors":"Min Luo, Jing Gao, Ran Liu, ShiQi Wang, Guangzhi Wang","doi":"10.1080/15592324.2023.2194748","DOIUrl":"10.1080/15592324.2023.2194748","url":null,"abstract":"<p><p><i>Fritillaria taipaiensis</i> P. Y. Li is the most suitable species planted at low altitudes among other species used as Tendrilleaf Fritillary Bulb, whose seeds embracing the morphological and physiological dormancy need to experience a long-dormant time from sowing to germination. In this study, the developmental changes of <i>F. taipaiensis</i> seeds during dormancy period were observed by morphological and anatomical observation, and the cause of long-term dormancy of seeds was discussed from the perspective of embryonic development. The process of embryonic organogenesis was revealed during the dormancy stage by the paraffin section. The effects of testa, endosperm and temperature on dormant seeds were discussed. Furthermore, we found that the mainly dormant reason was caused by the morphological dormancy, which accounted for 86% of seed development time. The differentiation time of the globular or pear-shaped embryo into a short-rod embryo was longer, which was one of the chief reasons for the morphological dormancy and played an important role in embryonic formation. Testa and endosperm with mechanical constraint and inhibitors involved in the dormancy of <i>F. taipaiensis</i> seeds. The seeds of <i>F. taipaiensis</i>, the average ambient temperature of 6-12°C for morphological dormancy and 11-22°C for physiological dormancy, were unsuitable for seed growth. Therefore, we suggested that the dormancy time of <i>F. taipaiensis</i> seeds could be shortened by shortening the development time of the proembryo stage and stratification for the different stages of dormancy.</p>","PeriodicalId":20232,"journal":{"name":"Plant Signaling & Behavior","volume":"18 1","pages":"2194748"},"PeriodicalIF":3.6,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10072057/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10116356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Mendel-200: Pea as a model system to analyze hormone-mediated stem elongation.","authors":"Ulrich Kutschera, Rajnish Khanna","doi":"10.1080/15592324.2023.2207845","DOIUrl":"10.1080/15592324.2023.2207845","url":null,"abstract":"<p><p>In a recent Review Article on Gregor Mendel's (1822-1884) work with pea (<i>Pisum sativum</i>)-plants, it was proposed that this crop species should be re-vitalized as a model organism for the study of cell- and organ growth. Here, we describe the effect of exogenous gibberellic acid (GA<sub>3</sub>) on the growth of the second internode in 4-day-old light-grown pea seedlings (<i>Pisum sativum</i>, large var. \"Senator\"). lnjection of glucose into the internode caused a growth-promoting effect similar to that of the hormone GA<sub>3</sub>. Imbibition of dry pea seeds in GA<sub>3</sub>, or water as control, resulted in a drastic enhancement in organ development in this tall variety. Similar results were reported for dwarf peas. These \"classical\" experimental protocols are suitable to study the elusive effect of gibberellins (which act in coordination with auxin) on the regulation of plant development at the biochemical and molecular levels.</p>","PeriodicalId":20232,"journal":{"name":"Plant Signaling & Behavior","volume":"18 1","pages":"2207845"},"PeriodicalIF":2.9,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10177674/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9471908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jianying Yue, Yan Lu, Zhenqi Sun, Yuqing Guo, David San León, Fabio Pasin, Mingmin Zhao
{"title":"Methyltransferase-like (METTL) homologues participate in <i>Nicotiana benthamiana</i> antiviral responses.","authors":"Jianying Yue, Yan Lu, Zhenqi Sun, Yuqing Guo, David San León, Fabio Pasin, Mingmin Zhao","doi":"10.1080/15592324.2023.2214760","DOIUrl":"10.1080/15592324.2023.2214760","url":null,"abstract":"<p><p>Methyltransferase (MTase) enzymes catalyze the addition of a methyl group to a variety of biological substrates. MTase-like (METTL) proteins are Class I MTases whose enzymatic activities contribute to the epigenetic and epitranscriptomic regulation of multiple cellular processes. N<sup>6</sup>-adenosine methylation (m<sup>6</sup>A) is a common chemical modification of eukaryotic and viral RNA whose abundance is jointly regulated by MTases and METTLs, demethylases, and m<sup>6</sup>A binding proteins. m<sup>6</sup>A affects various cellular processes including RNA degradation, post-transcriptional processing, and antiviral immunity. Here, we used <i>Nicotiana benthamiana</i> and plum pox virus (PPV), an RNA virus of the <i>Potyviridae</i> family, to investigated the roles of MTases in plant-virus interaction. RNA sequencing analysis identified MTase transcripts that are differentially expressed during PPV infection; among these, accumulation of a METTL gene was significantly downregulated. Two <i>N.</i> <i>benthamiana</i> METTL transcripts (NbMETTL1 and NbMETTL2) were cloned and further characterized. Sequence and structural analyses of the two encoded proteins identified a conserved S-adenosyl methionine (SAM) binding domain, showing they are SAM-dependent MTases phylogenetically related to human METTL16 and <i>Arabidopsis thaliana</i> FIONA1. Overexpression of NbMETTL1 and NbMETTL2 caused a decrease of PPV accumulation. In sum, our results indicate that METTL homologues participate in plant antiviral responses.</p>","PeriodicalId":20232,"journal":{"name":"Plant Signaling & Behavior","volume":"18 1","pages":"2214760"},"PeriodicalIF":2.8,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/58/4d/KPSB_18_2214760.PMC10202045.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9543788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Marija Đurić, Angelina Subotić, Ljiljana Prokić, Milana Trifunović-Momčilov, Snežana Milošević
{"title":"Foliar application of methyl jasmonate affects impatiens walleriana growth and leaf physiology under drought stress.","authors":"Marija Đurić, Angelina Subotić, Ljiljana Prokić, Milana Trifunović-Momčilov, Snežana Milošević","doi":"10.1080/15592324.2023.2219936","DOIUrl":"10.1080/15592324.2023.2219936","url":null,"abstract":"<p><p>In this study, the effects of foliar applied methyl jasmonate (MeJA) on drought-stressed <i>Impatiens walleriana</i> growth and leaf physiology parameters: stomatal conductance, chlorophyll, flavonoid, anthocyanin, and nitrogen balance index (NBI), were evaluated. These parameters could serve as indicators of drought tolerance of <i>I. walleriana</i>, a popular horticultural plant worldwide that is very sensitive to drought. The experiment included four treatments: control, drought-stressed plants sprayed with distilled water, drought-stressed plants sprayed with 5 µM MeJA, and drought-stressed plants sprayed with 50 µM MeJA. Foliar spraying with MeJA was performed twice: seven days before and on the day of drought induction. The stressed plant groups were non-irrigated to achieve soil water contents (SWC) of 15 and 5%, while control plants were well-watered throughout the experiment (35-37% SWC). The results of this study showed that drought significantly reduced <i>I. walleriana</i> fresh and dry shoot weight, as well as total leaf area, but did not impact on dry matter content. The foliar application of MeJA improved growth parameters of <i>I. walleriana</i>, depending on the elicitor concentration and drought intensity. Stomatal conductance was slightly reduced at 5% SWC, and foliar applied MeJA at both concentrations. The flavonoid index was slightly reduced at 15 and 5% SWC when 50 µM MeJA was foliar applied, while there were no observed changes in the anthocyanin index in any treatments. The foliar application of 50 µM MeJA increased the chlorophyll index and NBI of <i>I. walleriana</i> at 5% SWC, indicating a contribution of the elicitor to plant drought tolerance at the physiological level.</p>","PeriodicalId":20232,"journal":{"name":"Plant Signaling & Behavior","volume":"18 1","pages":"2219936"},"PeriodicalIF":2.8,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10251792/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9611913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The RGI1-BAK1 module acts as the main receptor-coreceptor pair for regulating primary root gravitropism and meristem activity in response to RGF1 peptide in Arabidopsis.","authors":"Byeong Wook Jeon, Jungmook Kim","doi":"10.1080/15592324.2023.2229957","DOIUrl":"10.1080/15592324.2023.2229957","url":null,"abstract":"<p><p>ROOT MERISTEM GROWTH FACTOR1 (RGF1) and its receptors RGF1 INSENSITIVEs (RGIs), a group of leucine-rich repeat receptor kinases, promote primary root meristem activity via a mitogen-activated protein kinase (MPK) signaling cascade and control root gravitropism in Arabidopsis. Genetic analyses and in vitro binding assays have indicated that among five RGIs identified in Arabidopsis, RGI1, RGI2, and RGI3 recognize RGF1 peptides. However, it remains unclear whether the RGF1 peptide is redundantly recognized by these RGIs or mainly by a single RGI in the regulation of primary root meristem activity. In the present study, we analyzed root meristem growth of the <i>rgi1</i>, <i>rgi2</i>, and <i>rgi3</i> single mutants in response to RGF1 treatment and observed a significantly decreased sensitivity in meristem growth of <i>rgi1</i> and complete insensitivity in <i>rgi1 rgi2 rgi3</i> triple mutant compared with the wild type but not in the <i>rgi1</i> and <i>rgi2</i> single mutants. We also observed that both root gravitropism and meristem growth in the <i>BRASSINOSTEROID INSENSITIVE1-ASSOCIATED RECEPTOR KINASE 1</i> (<i>bak1</i>) single mutant were insensitive to RGF1 peptide treatment, whereas other <i>serk</i> mutants, such as <i>serk1</i>, <i>serk2</i>, and <i>serk4</i>, were fully sensitive to RGF1 peptide like the wild type. These mutant analyses suggest that RGI1-BAK1 pair acts as the main receptor-coreceptor pair for regulating primary root gravitropism and meristem activity in response to RGF1 peptide in Arabidopsis.</p>","PeriodicalId":20232,"journal":{"name":"Plant Signaling & Behavior","volume":"18 1","pages":"2229957"},"PeriodicalIF":3.6,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/3c/da/KPSB_18_2229957.PMC10312015.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9726932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The recent relationship between ultraviolet-B radiation and biotic resistance in plants: a novel non-chemical strategy for managing biotic stresses.","authors":"Gideon Sadikiel Mmbando","doi":"10.1080/15592324.2023.2191463","DOIUrl":"10.1080/15592324.2023.2191463","url":null,"abstract":"<p><p>Ultraviolet-B radiation (UVB; 280-315 nm) is a significant environmental factor that alters plant development, changes interactions between species, and reduces the prevalence of pests and diseases. While UVB radiation has negative effects on plant growth and performance at higher doses, at lower and ambient doses, UVB radiation acts as a non-chemical method for managing biotic stresses by having positive effects on disease resistance and genes that protect plants from pests. Understanding the recent relationship between UVB radiation and plants' biotic stresses is crucial for the development of crops that are resistant to UVB and biotic stresses. However, little is known about the recent interactions between UVB radiation and biotic stresses in plants. This review discusses the most recent connections between UVB radiation and biotic stresses in crops, including how UVB radiation affects a plant's resistance to disease and pests. The interaction of UVB radiation with pathogens and herbivores has been the subject of the most extensive research of these. This review also discusses additional potential strategies for conferring multiple UVB-biotic stress resistance in crop plants, such as controlling growth inhibition, miRNA 396 and 398 modulations, and MAP kinase. This study provides crucial knowledge and methods for scientists looking to develop multiple resistant crops that will improve global food security.</p>","PeriodicalId":20232,"journal":{"name":"Plant Signaling & Behavior","volume":" ","pages":"2191463"},"PeriodicalIF":2.8,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10730183/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9131049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Piao Wei, Yun Lv, Qiao Guang, Jie Han, Yifan Wang, Xuewen Wang, Li Song
{"title":"<i>ChIFNα</i> regulates adventitious root development in <i>Lotus japonicus</i> via an auxin-mediated pathway.","authors":"Piao Wei, Yun Lv, Qiao Guang, Jie Han, Yifan Wang, Xuewen Wang, Li Song","doi":"10.1080/15592324.2023.2218670","DOIUrl":"10.1080/15592324.2023.2218670","url":null,"abstract":"<p><p>Adventitious roots (ARs), developing from non-root tissue, play an important role in some plants. Here, the molecular mechanism of AR differentiation in <i>Lotus japonicus</i> L. (<i>L. japonicus</i>) with the transformed chicken interferon alpha gene (ChIFNα) encoding cytokine was studied. ChIFNα transgenic plants (TP) were identified by GUS staining, PCR, RT-PCR, and ELISA. Up to 0.175 μg/kg rChIFNα was detected in TP2 lines. Expressing rChIFNα promotes AR development by producing longer roots than controls. We found that the effect was enhanced with the auxin precursor IBA treatment in TP. IAA contents, POD, and PPO activities associated with auxin regulation were higher than wild type (WT) in TP and exogenous ChIFNα treatment plants. Transcriptome analysis revealed 48 auxin-related differentially expressed genes (DEGs) (FDR < 0.05), which expression levels were verified by RT-qPCR analysis. GO enrichment analysis of DEGs also highlighted the auxin pathway. Further analysis found that ChIFNα significantly enhanced auxin synthesis and signaling mainly with up-regulated genes of ALDH, and GH3. Our study reveals that ChIFNα can promote plant AR development by mediating auxin regulation. The findings help explore the role of ChIFNα cytokines and expand animal gene sources for the molecular breeding of growth regulation of forage plants.</p>","PeriodicalId":20232,"journal":{"name":"Plant Signaling & Behavior","volume":"18 1","pages":"2218670"},"PeriodicalIF":2.8,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/84/50/KPSB_18_2218670.PMC10251782.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9629291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}