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Wang J, Liu S, Liu H, Chen K, Zhang P. PnSAG1, an E3 ubiquitin ligase of the Antarctic moss Pohlia nutans, enhanced sensitivity to salt stress and ABA. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 141:343-352. [PMID: 31207495 DOI: 10.1016/j.plaphy.2019.06.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 06/03/2019] [Accepted: 06/03/2019] [Indexed: 06/09/2023]
Abstract
Plant U-box (PUB) E3 ubiquitin ligases play crucial roles in the plant response to abiotic stress and the phytohormone abscisic acid (ABA) signaling, but little is known about them in bryophytes. Here, a representative U-box armadillo repeat (PUB-ARM) ubiquitin E3 ligase from Antarctic moss Pohlia nutans (PnSAG1), was explored for its role in abiotic stress response in Arabidopsis thaliana and Physcomitrella patens. The expression of PnSAG1 was rapidly induced by exogenous abscisic acid (ABA), salt, cold and drought stresses. PnSAG1 was localized to the cytoplasm and showed E3 ubiquitin ligase activity by in vitro ubiquitination assay. The PnSAG1-overexpressing Arabidopsis enhanced the sensitivity with respect to ABA and salt stress during seed germination and early root growth. Similarly, heterogeneous overexpression of PnSAG1 in P. patens was more sensitive to the salinity and ABA in their gametophyte growth. The analysis by RT-qPCR revealed that the expression of salt stress/ABA-related genes were downregulated in PnSAG1-overexpressing plants after salt treatment. Taken together, our results indicated that PnSAG1 plays a negative role in plant response to ABA and salt stress.
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Affiliation(s)
- Jing Wang
- National Glycoengineering Research Center and School of Life Science, Shandong University, Qingdao, 266237, China; Key Laboratory of Pediatrics, Liaocheng People's Hospital, Liaocheng, Shandong, 252000, China
| | - Shenghao Liu
- Marine Ecology Research Center, The First Institute of Oceanography, State Oceanic Administration, Qingdao, 266061, China
| | - Hongwei Liu
- National Glycoengineering Research Center and School of Life Science, Shandong University, Qingdao, 266237, China
| | - Kaoshan Chen
- National Glycoengineering Research Center and School of Life Science, Shandong University, Qingdao, 266237, China
| | - Pengying Zhang
- National Glycoengineering Research Center and School of Life Science, Shandong University, Qingdao, 266237, China.
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Integrated analysis of intraspecific diversity in the bipolar moss Roaldia revoluta (Mitt.) P.E.A.S. Câmara & M. Carvalho-Silva (Bryophyta) in Antarctica. Polar Biol 2018. [DOI: 10.1007/s00300-018-2437-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Laenen B, Patiño J, Hagborg A, Désamoré A, Wang J, Shaw AJ, Goffinet B, Vanderpoorten A. Evolutionary origin of the latitudinal diversity gradient in liverworts. Mol Phylogenet Evol 2018; 127:606-612. [PMID: 29890223 DOI: 10.1016/j.ympev.2018.06.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 06/02/2018] [Accepted: 06/04/2018] [Indexed: 12/31/2022]
Abstract
A latitudinal diversity gradient towards the tropics appears as one most recurrent patterns in ecology, but the mechanisms underlying this pattern remain an area of controversy. In angiosperms, the tropical conservatism hypothesis proposes that most groups originated in the tropics and are adapted to a tropical climatic regime, and that relatively few species have evolved physiological adaptations to cold, dry or unpredictable climates. This mechanism is, however, unlikely to apply across land plants, and in particular, to liverworts, a group of about 7500 species, whose ability to withstand cold much better than their tracheophyte counterparts is at odds with the tropical conservatism hypothesis. Molecular dating, diversification rate analyses and ancestral area reconstructions were employed to explore the evolutionary mechanisms that account for the latitudinal diversity gradient in liverworts. As opposed to angiosperms, tropical liverwort genera are not older than their extra-tropical counterparts (median stem age of tropical and extra-tropical liverwort genera of 24.35 ± 39.65 Ma and 39.57 ± 49.07 Ma, respectively), weakening the 'time for speciation hypothesis'. Models of ancestral area reconstructions with equal migration rates between tropical and extra-tropical regions outperformed models with asymmetrical migration rates in either direction. The symmetry and intensity of migrations between tropical and extra-tropical regions suggested by the lack of resolution in ancestral area reconstructions towards the deepest nodes are at odds with the tropical niche conservatism hypothesis. In turn, tropical genera exhibited significantly higher net diversification rates than extra-tropical ones, suggesting that the observed latitudinal diversity gradient results from either higher extinction rates in extra-tropical lineages or higher speciation rates in the tropics. We discuss a series of experiments to help deciphering the underlying evolutionary mechanisms.
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Affiliation(s)
- Benjamin Laenen
- Department of Ecology, Environment, and Plant Sciences, Science for Life Laboratory, Stockholm University, Sweden
| | - Jairo Patiño
- Island Ecology and Evolution Research Group, Instituto de Productos Naturales and Agrobiología (IPNA-CSIC), La Laguna, Tenerife, Spain; Department of Environmental Science, Policy and Management, University of California, Berkeley, CA 94720, USA
| | | | - Aurélie Désamoré
- Department of Ecology, Environment, and Plant Sciences, Science for Life Laboratory, Stockholm University, Sweden
| | - Jian Wang
- Bryology Laboratory, School of Life Sciences, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - A Jonathan Shaw
- Department of Biology, Duke University, Durham, NC 27708, USA
| | - Bernard Goffinet
- Department of Ecology and Evolutionary Biology, University of Connecticut, Storrs, CT 06269, USA
| | - Alain Vanderpoorten
- National Fund for Scientific Research at University of Liege, Institute of Botany, Belgium.
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Nieto-Lugilde M, Werner O, McDaniel SF, Koutecký P, Kučera J, Rizk SM, Ros RM. Peripatric speciation associated with genome expansion and female-biased sex ratios in the moss genus Ceratodon. AMERICAN JOURNAL OF BOTANY 2018; 105:1009-1020. [PMID: 29957852 DOI: 10.1002/ajb2.1107] [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: 11/21/2017] [Accepted: 03/21/2018] [Indexed: 06/08/2023]
Abstract
PREMISE OF THE STUDY A period of allopatry is widely believed to be essential for the evolution of reproductive isolation. However, strict allopatry may be difficult to achieve in some cosmopolitan, spore-dispersed groups, like mosses. We examined the genetic and genome size diversity in Mediterranean populations of the moss Ceratodon purpureus s.l. to evaluate the role of allopatry and ploidy change in population divergence. METHODS We sampled populations of the genus Ceratodon from mountainous areas and lowlands of the Mediterranean region, and from Western and Central Europe. We performed phylogenetic and coalescent analyses on sequences from five nuclear introns and a chloroplast locus to reconstruct their evolutionary history. We also estimated genome size using flow cytometry (employing propidium iodide) and determined the sex of samples using a sex-linked PCR marker. KEY RESULTS Two well-differentiated clades were resolved, discriminating two homogeneous groups: the widespread C. purpureus and a local group mostly restricted to the mountains in Southern Spain. The latter also possessed a genome size 25% larger than the widespread C. purpureus, and the samples of this group consist entirely of females. We also found hybrids, and some of them had a genome size equivalent to the sum of the C. purpureus and Spanish genome, suggesting that they arose by allopolyploidy. CONCLUSIONS These data suggest that a new species of Ceratodon arose via peripatric speciation, potentially involving a genome size change and a strong female-biased sex ratio. The new species has hybridized in the past with C. purpureus.
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Affiliation(s)
- Marta Nieto-Lugilde
- Departamento de Biología Vegetal, Facultad de Biología, Universidad de Murcia, Campus de Espinardo, 30100, Murcia, Spain
| | - Olaf Werner
- Departamento de Biología Vegetal, Facultad de Biología, Universidad de Murcia, Campus de Espinardo, 30100, Murcia, Spain
| | - Stuart F McDaniel
- Biology Department, University of Florida, Gainesville, Florida, 32611, USA
| | - Petr Koutecký
- Faculty of Science, University of South Bohemia, Branišovská 1760, CZ-370 05, České Budějovice, Czech Republic
| | - Jan Kučera
- Faculty of Science, University of South Bohemia, Branišovská 1760, CZ-370 05, České Budějovice, Czech Republic
| | - Samah Mohamed Rizk
- Genetics Department, Faculty of Agriculture, Ain Shams University, 68 Hadayek Shubra, 11241, Cairo, Egypt
| | - Rosa M Ros
- Departamento de Biología Vegetal, Facultad de Biología, Universidad de Murcia, Campus de Espinardo, 30100, Murcia, Spain
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Massatti R, Doherty KD, Wood TE. Resolving neutral and deterministic contributions to genomic structure in Syntrichia ruralis (Bryophyta, Pottiaceae) informs propagule sourcing for dryland restoration. CONSERV GENET 2017. [DOI: 10.1007/s10592-017-1026-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Wang J, Li C, Yao X, Liu S, Zhang P, Chen K. The Antarctic moss leucine-rich repeat receptor-like kinase (PnLRR-RLK2) functions in salinity and drought stress adaptation. Polar Biol 2017. [DOI: 10.1007/s00300-017-2195-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Condon LA, Pyke DA. Filling the interspace-restoring arid land mosses: source populations, organic matter, and overwintering govern success. Ecol Evol 2016; 6:7623-7632. [PMID: 30128116 PMCID: PMC6093148 DOI: 10.1002/ece3.2448] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Revised: 07/29/2016] [Accepted: 08/12/2016] [Indexed: 11/29/2022] Open
Abstract
Biological soil crusts contribute to ecosystem functions and occupy space that could be available to invasive annual grasses. Given disturbances in the semiarid shrub steppe communities, we embarked on a set of studies to investigate restoration potential of mosses in sagebrush steppe ecosystems. We examined establishment and growth of two moss species common to the Great Basin, USA: Bryum argenteum and Syntrichia ruralis from two environmental settings (warm dry vs. cool moist). Moss fragments were inoculated into a third warm dry setting, on bare soil in spring and fall, both with and without a jute net and with and without spring irrigation. Moss cover was monitored in spring seasons of three consecutive years. Both moss species increased in cover over the winter. When Bryum received spring irrigation that was out of sync with natural precipitation patterns, moss cover increased and then crashed, taking two seasons to recover. Syntrichia did not respond to the irrigation treatment. The addition of jute net increased moss cover under all conditions, except Syntrichia following fall inoculation, which required a second winter to increase in cover. The warm dry population of Bryum combined with jute achieved on average 60% cover compared to the cool moist population that achieved only 28% cover by the end of the study. Differences were less pronounced for Syntrichia where moss from the warm dry population with jute achieved on average 51% cover compared to the cool moist population that achieved 43% cover by the end of the study. Restoration of arid land mosses may quickly protect soils from erosion while occupying sites before invasive plants. We show that higher moss cover will be achieved quickly with the addition of organic matter and when moss fragments originate from sites with a climate that is similar to that of the restoration site.
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Affiliation(s)
- Lea A. Condon
- Department of Botany and Plant PathologyOregon State UniversityCorvallisORUSA
- U.S. Geological SurveyForest and Rangeland Ecosystem Science CenterCorvallisORUSA
| | - David A. Pyke
- U.S. Geological SurveyForest and Rangeland Ecosystem Science CenterCorvallisORUSA
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Magdy M, Werner O, McDaniel SF, Goffinet B, Ros RM. Genomic scanning using AFLP to detect loci under selection in the moss Funaria hygrometrica along a climate gradient in the Sierra Nevada Mountains, Spain. PLANT BIOLOGY (STUTTGART, GERMANY) 2016; 18:280-288. [PMID: 26284822 DOI: 10.1111/plb.12381] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Accepted: 08/11/2015] [Indexed: 06/04/2023]
Abstract
The common cord moss Funaria hygrometrica has a worldwide distribution and thrives in a wide variety of environments. Here, we studied the genetic diversity in F. hygrometrica along an abiotic gradient in the Mediterranean high mountain of Sierra Nevada (Spain) using a genome scan method. Eighty-four samples from 17 locations from 24 to 2700 m were fingerprinted based on their amplified fragment length polymorphism (AFLP) banding pattern. Using PCA and Bayesian inference we found that the genetic diversity was structured in three or four clusters, respectively. Using a genome scan method we identified 13 outlier loci, which showed a signature of positive selection. Partial Mantel tests were performed between the Euclidean distance matrices of geographic and climatic variables, versus the pair-wise genetic distance of the AFLP dataset and AFLP-positive outliers dataset. AFLP-positive outlier data were significantly correlated with the gradient of the climatic variables, suggesting adaptive variation among populations of F. hygrometrica along the Sierra Nevada Mountains. We highlight the additional analyses necessary to identify the nature of these loci, and their biological role in the adaptation process.
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Affiliation(s)
- M Magdy
- Departamento de Biología Vegetal, Facultad de Biología, Universidad de Murcia, Murcia, Spain
- Genetics Department, Faculty of Agriculture, Ain Shams University, Cairo, Egypt
| | - O Werner
- Departamento de Biología Vegetal, Facultad de Biología, Universidad de Murcia, Murcia, Spain
| | - S F McDaniel
- Biology Department, University of Florida, Gainesville, FL, USA
| | - B Goffinet
- Ecology and Evolutionary Biology, University of Connecticut, Storrs, CT, USA
| | - R M Ros
- Departamento de Biología Vegetal, Facultad de Biología, Universidad de Murcia, Murcia, Spain
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Pisa S, Vanderpoorten A, Patiño J, Werner O, González-Mancebo JM, Ros RM. How to define nativeness in vagile organisms: lessons from the cosmopolitan moss Bryum argenteum on the island of Tenerife (Canary Islands). PLANT BIOLOGY (STUTTGART, GERMANY) 2015; 17:1057-1065. [PMID: 25980839 DOI: 10.1111/plb.12348] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Accepted: 05/13/2015] [Indexed: 06/04/2023]
Abstract
The distinction between native and introduced biotas presents unique challenges that culminate in organisms with high long-distance dispersal capacities in a rapidly changing world. Bryophytes, in particular, exhibit large distribution ranges, and some species can truly be qualified as cosmopolitan. Cosmopolitan species, however, typically occur in disturbed environments, raising the question of their nativeness throughout their range. Here, we employ genetic data to address the question of the origin of the cosmopolitan, weedy moss Bryum argenteum on the island of Tenerife. The genetic diversity of B. argenteum on Tenerife was comparable to that found in continental areas due to recurrent colonisation events, erasing any signature of a bottleneck that would be expected in the case of a recent colonisation event. The molecular dating analyses indicated that the first colonisation of the island took place more than 100,000 years ago, i.e. well before the first human settlements. Furthermore, the significant signal for isolation-by-distance found in B. argenteum within Tenerife points to the substantial role of genetic drift in establishing the observed patterns of genetic variation. Together, the results support the hypothesis that B. argenteum is native on Tenerife; although the existence of haplotypes shared between Tenerife and continental areas suggests that more recent, potentially man-mediated introduction also took place. While defining nativeness in organisms that are not deliberately introduced, and wherein the fossil record is extremely scarce, is an exceedingly challenging task, our results suggest that population genetic analyses can represent a useful tool to help distinguish native from alien populations.
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Affiliation(s)
- S Pisa
- Departamento de Biología Vegetal, Universidad de Murcia, Murcia, Spain
| | | | - J Patiño
- Institute of Botany, University of Liège, Liège, Belgium
- Departamento de Biología Vegetal, Universidad de La Laguna, Tenerife, Spain
| | - O Werner
- Departamento de Biología Vegetal, Universidad de Murcia, Murcia, Spain
| | | | - R M Ros
- Departamento de Biología Vegetal, Universidad de Murcia, Murcia, Spain
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