1
|
Negin B, Shachar L, Meir S, Ramirez CC, Rami Horowitz A, Jander G, Aharoni A. Fatty alcohols, a minor component of the tree tobacco surface wax, are associated with defence against caterpillar herbivory. PLANT, CELL & ENVIRONMENT 2024; 47:664-681. [PMID: 37927215 DOI: 10.1111/pce.14752] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 10/10/2023] [Accepted: 10/17/2023] [Indexed: 11/07/2023]
Abstract
Despite decades of research resulting in a comprehensive understanding of epicuticular wax metabolism, the function of these almost ubiquitous metabolites in plant-herbivore interactions remains unresolved. In this study, we examined the effects of CRISPR-induced knockout mutations in four Nicotiana glauca (tree tobacco) wax metabolism genes. These mutations cause a wide range of changes in epicuticular wax composition, leading to altered interactions with insects and snails. Three interaction classes were examined: chewing herbivory by seven caterpillars and one snail species, phloem feeding by Myzus persicae (green peach aphid) and oviposition by Bemisia tabaci (whitefly). Although total wax load and alkane abundance did not affect caterpillar growth, a correlation across species, showed that fatty alcohols, a minor component of N. glauca surface waxes, negatively affected the growth of both a generalist caterpillar (Spodoptera littoralis) and a tobacco-feeding specialist (Manduca sexta). This negative correlation was overshadowed by the stronger effect of anabasine, a nicotine isomer, and was apparent when fatty alcohols were added to an artificial lepidopteran diet. By contrast, snails fed more on waxy leaves. Aphid reproduction and feeding activity were unaffected by wax composition but were potentially affected by altered cutin composition. Wax crystal morphology could explain the preference of B. tabaci to lay eggs on waxy wild-type plants relative to both alkane and fatty alcohol-deficient mutants. Together, our results suggest that the varied responses among herbivore classes and species are likely to be a consequence of the co-evolution that shaped the specific effects of different surface wax components in plant-herbivore interactions.
Collapse
Affiliation(s)
- Boaz Negin
- Plant and Environmental Science Department, Weizmann Institute of Science, Rehovot, Israel
- Boyce Thompson Institute, Ithaca, New York, USA
| | - Lior Shachar
- Plant and Environmental Science Department, Weizmann Institute of Science, Rehovot, Israel
| | - Sagit Meir
- Plant and Environmental Science Department, Weizmann Institute of Science, Rehovot, Israel
| | - Claudio C Ramirez
- Centre for Molecular and Functional Ecology in Agroecosystems, Instituto de Ciencias Biológicas, Universidad de Talca, Talca, Chile
| | - A Rami Horowitz
- Department of Entomology, Agricultural Research Organization (ARO), Gilat Research Center for Arid and Semi-Arid Agricultural Research, Rishon Lezion, Israel
- Katif Research Center, Sedot Negev, Israel
- Ministry of Science and Technology, Netivot, Israel
| | | | - Asaph Aharoni
- Plant and Environmental Science Department, Weizmann Institute of Science, Rehovot, Israel
| |
Collapse
|
2
|
Tomecki R, Drazkowska K, Kobylecki K, Tudek A. SKI complex: A multifaceted cytoplasmic RNA exosome cofactor in mRNA metabolism with links to disease, developmental processes, and antiviral responses. WILEY INTERDISCIPLINARY REVIEWS. RNA 2023; 14:e1795. [PMID: 37384835 DOI: 10.1002/wrna.1795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 04/26/2023] [Accepted: 05/01/2023] [Indexed: 07/01/2023]
Abstract
RNA stability and quality control are integral parts of gene expression regulation. A key factor shaping eukaryotic transcriptomes, mainly via 3'-5' exoribonucleolytic trimming or degradation of diverse transcripts in nuclear and cytoplasmic compartments, is the RNA exosome. Precise exosome targeting to various RNA molecules requires strict collaboration with specialized auxiliary factors, which facilitate interactions with its substrates. The predominant class of cytoplasmic RNA targeted by the exosome are protein-coding transcripts, which are carefully scrutinized for errors during translation. Normal, functional mRNAs are turned over following protein synthesis by the exosome or by Xrn1 5'-3'-exonuclease, acting in concert with Dcp1/2 decapping complex. In turn, aberrant transcripts are eliminated by dedicated surveillance pathways, triggered whenever ribosome translocation is impaired. Cytoplasmic 3'-5' mRNA decay and surveillance are dependent on the tight cooperation between the exosome and its evolutionary conserved co-factor-the SKI (superkiller) complex (SKIc). Here, we summarize recent findings from structural, biochemical, and functional studies of SKIc roles in controlling cytoplasmic RNA metabolism, including links to various cellular processes. Mechanism of SKIc action is illuminated by presentation of its spatial structure and details of its interactions with exosome and ribosome. Furthermore, contribution of SKIc and exosome to various mRNA decay pathways, usually converging on recycling of ribosomal subunits, is delineated. A crucial physiological role of SKIc is emphasized by describing association between its dysfunction and devastating human disease-a trichohepatoenteric syndrome (THES). Eventually, we discuss SKIc functions in the regulation of antiviral defense systems, cell signaling and developmental transitions, emerging from interdisciplinary investigations. This article is categorized under: RNA Turnover and Surveillance > Turnover/Surveillance Mechanisms RNA Turnover and Surveillance > Regulation of RNA Stability RNA Interactions with Proteins and Other Molecules > RNA-Protein Complexes.
Collapse
Affiliation(s)
- Rafal Tomecki
- Laboratory of RNA Processing and Decay, Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
- Institute of Genetics and Biotechnology, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - Karolina Drazkowska
- Laboratory of Epitranscriptomics, Department of Environmental Microbiology and Biotechnology, Institute of Microbiology, Faculty of Biology, Biological and Chemical Research Centre, University of Warsaw, Warsaw, Poland
| | - Kamil Kobylecki
- Laboratory of RNA Processing and Decay, Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - Agnieszka Tudek
- Laboratory of RNA Processing and Decay, Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| |
Collapse
|
3
|
Lange H, Gagliardi D. Catalytic activities, molecular connections, and biological functions of plant RNA exosome complexes. THE PLANT CELL 2022; 34:967-988. [PMID: 34954803 PMCID: PMC8894942 DOI: 10.1093/plcell/koab310] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 12/16/2021] [Indexed: 05/08/2023]
Abstract
RNA exosome complexes provide the main 3'-5'-exoribonuclease activities in eukaryotic cells and contribute to the maturation and degradation of virtually all types of RNA. RNA exosomes consist of a conserved core complex that associates with exoribonucleases and with multimeric cofactors that recruit the enzyme to its RNA targets. Despite an overall high level of structural and functional conservation, the enzymatic activities and compositions of exosome complexes and their cofactor modules differ among eukaryotes. This review highlights unique features of plant exosome complexes, such as the phosphorolytic activity of the core complex, and discusses the exosome cofactors that operate in plants and are dedicated to the maturation of ribosomal RNA, the elimination of spurious, misprocessed, and superfluous transcripts, or the removal of mRNAs cleaved by the RNA-induced silencing complex and other mRNAs prone to undergo silencing.
Collapse
Affiliation(s)
- Heike Lange
- Institut de Biologie Moléculaire des Plantes, CNRS, Université de Strasbourg, Strasbourg, France
- Author for correspondence:
| | - Dominique Gagliardi
- Institut de Biologie Moléculaire des Plantes, CNRS, Université de Strasbourg, Strasbourg, France
| |
Collapse
|
4
|
Zhang Z, Wang J, Xing G, Li M, Li S. Integrating physiology, genetics, and transcriptome to decipher a new thermo-sensitive and light-sensitive virescent leaf gene mutant in cucumber. FRONTIERS IN PLANT SCIENCE 2022; 13:972620. [PMID: 36051299 PMCID: PMC9424728 DOI: 10.3389/fpls.2022.972620] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Accepted: 07/25/2022] [Indexed: 05/08/2023]
Abstract
Chloroplasts are the material basis of photosynthesis, and temperature and light severely affect chloroplast development and thus influence photosynthetic efficiency. This study identified a spontaneous virescent leaf mutant, SC311Y, whose cotyledons and true leaves were yellow and gradually turned green. However, temperature and light affected the process of turning green. In addition, this mutant (except at the seedling stage) had ruffled leaves with white stripes, sterile males, and poorly fertile female flowers. Genetic characteristics analysis revealed that the recessive gene controlled the virescent leaf. Two F2 populations mapped v-3 to the interval of 33.54-35.66 Mb on chromosome 3. In this interval, BSA-Seq, RNA-Seq, and cDNA sequence analyses revealed only one nonsynonymous mutation in the Csa3G042730 gene, which encoded the RNA exosome supercomplex subunit resurrection1 (RST1). Csa3G042730 was predicted to be the candidate gene controlling the virescent leaf, and the candidate gene may regulate chloroplast development by regulating plastid division2 (PDV2). A transcriptome analysis showed that different factors caused the reduced chlorophyll and carotenoid content in the mutants. To our knowledge, this study is the first report of map-based cloning related to virescent leaf, male-sterile, and chloroplast RNA regulation in cucumber. The results could accelerate the study of the RNA exosome supercomplex for the dynamic regulation of chloroplast RNA.
Collapse
Affiliation(s)
- Zhipeng Zhang
- College of Horticulture, Shanxi Agricultural University, Jinzhong, China
- Collaborative Innovation Center for Improving Quality and Increase of Protected Vegetables in Shanxi Province, Jinzhong, China
| | - Jinyao Wang
- College of Horticulture, Shanxi Agricultural University, Jinzhong, China
- Collaborative Innovation Center for Improving Quality and Increase of Protected Vegetables in Shanxi Province, Jinzhong, China
| | - Guoming Xing
- College of Horticulture, Shanxi Agricultural University, Jinzhong, China
- Collaborative Innovation Center for Improving Quality and Increase of Protected Vegetables in Shanxi Province, Jinzhong, China
| | - Meilan Li
- College of Horticulture, Shanxi Agricultural University, Jinzhong, China
- Collaborative Innovation Center for Improving Quality and Increase of Protected Vegetables in Shanxi Province, Jinzhong, China
- *Correspondence: Meilan Li,
| | - Sen Li
- College of Horticulture, Shanxi Agricultural University, Jinzhong, China
- Collaborative Innovation Center for Improving Quality and Increase of Protected Vegetables in Shanxi Province, Jinzhong, China
- Sen Li,
| |
Collapse
|
5
|
Auth M, Nyikó T, Auber A, Silhavy D. The role of RST1 and RIPR proteins in plant RNA quality control systems. PLANT MOLECULAR BIOLOGY 2021; 106:271-284. [PMID: 33864582 PMCID: PMC8116306 DOI: 10.1007/s11103-021-01145-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 03/22/2021] [Indexed: 05/03/2023]
Abstract
To keep mRNA homeostasis, the RNA degradation, quality control and silencing systems should act in balance in plants. Degradation of normal mRNA starts with deadenylation, then deadenylated transcripts are degraded by the SKI-exosome 3'-5' and/or XRN4 5'-3' exonucleases. RNA quality control systems identify and decay different aberrant transcripts. RNA silencing degrades double-stranded transcripts and homologous mRNAs. It also targets aberrant and silencing prone transcripts. The SKI-exosome is essential for mRNA homeostasis, it functions in normal mRNA degradation and different RNA quality control systems, and in its absence silencing targets normal transcripts. It is highly conserved in eukaryotes, thus recent reports that the plant SKI-exosome is associated with RST1 and RIPR proteins and that, they are required for SKI-exosome-mediated decay of silencing prone transcripts were unexpected. To clarify whether RST1 and RIPR are essential for all SKI-exosome functions or only for the elimination of silencing prone transcripts, degradation of different reporter transcripts was studied in RST1 and RIPR inactivated Nicotiana benthamiana plants. As RST1 and RIPR, like the SKI-exosome, were essential for Non-stop and No-go decay quality control systems, and for RNA silencing- and minimum ORF-mediated decay, we propose that RST1 and RIPR are essential components of plant SKI-exosome supercomplex.
Collapse
Affiliation(s)
- Mariann Auth
- Biological Research Centre, Institute of Plant Biology, ELKH, Temesvári krt 62, 6726, Szeged, Hungary
- Agricultural Biotechnology Institute, Department of Genetics, NARIC, Gödöllő, Hungary
| | - Tünde Nyikó
- Agricultural Biotechnology Institute, Department of Genetics, NARIC, Gödöllő, Hungary
| | - Andor Auber
- Agricultural Biotechnology Institute, Department of Genetics, NARIC, Gödöllő, Hungary
| | - Dániel Silhavy
- Biological Research Centre, Institute of Plant Biology, ELKH, Temesvári krt 62, 6726, Szeged, Hungary.
- Agricultural Biotechnology Institute, Department of Genetics, NARIC, Gödöllő, Hungary.
| |
Collapse
|
6
|
Daszkowska-Golec A, Karcz J, Plociniczak T, Sitko K, Szarejko I. Cuticular waxes-A shield of barley mutant in CBP20 (Cap-Binding Protein 20) gene when struggling with drought stress. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2020; 300:110593. [PMID: 33180718 DOI: 10.1016/j.plantsci.2020.110593] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 06/27/2020] [Accepted: 07/02/2020] [Indexed: 06/11/2023]
Abstract
CBP20 (Cap-Binding Protein 20) encodes a small subunit of nuclear Cap-Binding Complex (nCBC) that together with CBP80 binds mRNA cap. We previously described barley hvcbp20.ab mutant that demonstrated higher leaf water content and faster stomatal closure than the WT after drought stress. Hence, we presumed that the better water-saving mechanism in hvcbp20.ab may result from the lower permeability of epidermis that together with stomata action limit the water evaporation under drought stress. We asked whether hvcbp20.ab exhibited any differences in wax load on the leaf surface when subjected to drought in comparison to WT cv. 'Sebastian'. To address this question, we investigated epicuticular wax structure and chemical composition under drought stress in hvcbp20.ab mutant and its WT. We showed that hvcbp20.ab mutant exhibited the increased deposition of cuticular wax. Moreover, our gene expression results suggested a role of HvCBP20 as a negative regulator of both, the biosynthesis of waxes at the level of alkane-forming, and waxes transportation. Interestingly, we also observed increased wax deposition in Arabidopsis cbp20 mutant exposed to drought, which allowed us to describe the CBP20-regulated epicuticular wax accumulation under drought stress in a wider evolutionarily context.
Collapse
Affiliation(s)
- Agata Daszkowska-Golec
- Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Jagiellonska 28, 40-032, Katowice, Poland.
| | - Jagna Karcz
- Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Jagiellonska 28, 40-032, Katowice, Poland
| | - Tomasz Plociniczak
- Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Jagiellonska 28, 40-032, Katowice, Poland
| | - Krzysztof Sitko
- Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Jagiellonska 28, 40-032, Katowice, Poland
| | - Iwona Szarejko
- Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Jagiellonska 28, 40-032, Katowice, Poland
| |
Collapse
|