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| 1 | Global dispersal and diversification of the genus Schoenus (Cyperaceae) from the Western Australian biodiversity hotspot显示文摘The predominantly austral genus Schoenus L.is the largest genus in tribe Schoeneae and one of the ten most species-rich Cyperaceae genera,with over 150 accepted species found mostly in Australia,New Zealand,southeast Asia,and southern Africa.Here,we use data based on two nuclear and three plastid DNA regions to present one of the most comprehensive phylogenetic reconstructions of a genus in Cyperaceae to date,covering over 70%of described species of Schoenus.After recent taxonomic realignments in the last 4 years have both added and removed species from the genus,we show that Schoenus is now monophyletic.In addition,our results indicate that Schoenus originated in Western Australia in the Paleocene and eventually dispersed to surrounding continents,but rarely back.The diversification rate of the genus appears to have slightly decreased over time,and there has not been an increase associated with the establishment of the Cape clade endemic to the sclerophyllous fynbos vegetation type,such as has been reported in other plant lineages endemic to the Cape region.These results will serve as a template to understanding the complex patterns of genome size evolution and to untangle drivers of diversification in this genus. | Tammy L.Elliott Ruan van Mazijk Russell L.Barrett Jeremy J.Bruhl Simon Joly Ngalirendwe Muthaphuli Karen L.Wilson A.Muthama Muasya | 2021 | Journal of Systematics and Evolution2021，59，4： | 2 |
| 2 | Genetic and phenotypic parameters and annual trends for milk production and fertility traits of the Sahiwal cattle in semi arid Kenya 显示文摘 | Ilatsia E D Muasya T K Muhuyi W B | 2004 | Trop Animal Health Prod2004，39，1： | 1 |
| 3 | Closely related allopatric Podalyria species from the Core Cape Subregion differ in their mechanisms for acquisition of phosphorus,growth and ecological niche显示文摘Aims In the Core Cape Subregion(CCR),a Mediterranean-climate ecosystem with infertile soils,the legume species Podalyria calyptrata and P.burchellii are in a separate clade to P.leipoldtii and P.myrtillifolia.The closely related species are allopatric,and with the west-east climate gradient and variation in soil nutrient availability in the CCR,it was hypothesized that the two closely related allopatric species would differ in their ecological niche and root:shoot ratio,specific root length(SRL)and organic acid exudation responses to phosphorus(P)supply.Methods With increasing P supply in the glasshouse,we measured plant biomass,leaf nitrogen([N]),[P],root morphology and release of organic acids.We determined species soil and leaf[N]and[P]and climate in field sites.Important FindingsAt low P supply,P.calyptrata roots exuded more organic acids than P.burchellii which instead produced roots with a greater SRL,and P.myrtillifolia allocated more biomass to roots than P.leipoldtii.In the field,leaf[P]and climate suggested that P.leipoldtii occupied the most oligotrophic niche followed by P.burchellii and then P.calyptrata and P.myrtillifolia.Closely related allopatric species differed in their mechanisms for P-acquisition and ecological niche,indicating that the environment overrides phylogeny in determining P-acquisition traits for these species,and suggesting that climate regulates nutrient availability,driving distribution and speciation. | Pravin M.Maistry A.Muthama Muasya Alex J.Valentine Louise Zdanow Samson B.M.Chimphango | 2016 | Journal of Plant Ecology2016，9，4： | 1 |
| 4 | Targeted sequencing supports morphology and embryo features in resolving the classification of Cyperaceae tribe Fuireneae s.l.显示文摘Molecular phylogenetic studies based on Sanger sequences have shown that Cyperaceae tribe Fuireneae s.l.is paraphyletic.However,taxonomic sampling in these studies has been poor,topologies have been inconsistent,and support for the backbone of trees has been weak.Moreover,uncertainty still surrounds the morphological limits of Schoenoplectiella,a genus of mainly small,amphicarpic annuals that was recently segregated from Schoenoplectus.Consequently,despite ample evidence from molecular analyses that Fuireneae s.l.might consist of two to four tribal lineages,no taxonomic changes have yet been made.Here,we use the Angiosperms353 enrichment panel for targeted sequencing to(i)clarify the relationships of Fuireneae s.l.with the related tribes Abildgaardieae,Eleocharideae,and Cypereae;(ii)define the limits of Fuireneae s.s.,and(iii)test the monophyly of Fuireneae s.l.genera with emphasis on Schoenoplectus and Schoenoplectiella.Using more than a third of Fuireneae s.l.diversity,our phylogenomic analyses strongly support six genera and four major Fuireneae s.l.clades that we recognize as tribes:Bolboschoeneae stat.nov.,Fuireneae s.s.,Schoenoplecteae,and Pseudoschoeneae tr.nov.These results are consistent with morphological,micromorphological(nutlet epidermal cell shape),and embryo differences detected for each tribe.At the generic level,most sub-Saharan African perennials currently treated in Schoenoplectus are transferred to Schoenoplectiella.Our targeted sequencing results show that these species are nested in Schoenoplectiella,and their treatment here is consistent with micromorphological and embryo characters shared by all Schoenoplectiella species.Keys to recognized tribes and genera are provided. | Julian R.Starr Pedro Jiménez-Mejías Alexandre R.Zuntini Étienne Léveillé-Bourret Ilias Semmouri Muthama Muasya William J.Baker Grace E.Brewer Niroshini Epitawalage Isabel Fairlie Félix Forest Izai A.B.Sabino Kikuchi Lisa Pokorny Isabel Larridon | 2021 | Journal of Systematics and Evolution2021，59，4： | 1 |
| 5 | A new classification of Cyperaceae (Poales) supported by phylogenomic data显示文摘Cyperaceae(sedges)are the third largest monocot family and are of considerable economic and ecological importance.Sedges represent an ideal model family to study evolutionary biology due to their species richness,global distribution,large discrepancies in lineage diversity,broad range of ecological preferences,and adaptations including multiple origins of C4 photosynthesis and holocentric chromosomes.Goetghebeur′s seminal work on Cyperaceae published in 1998 provided the most recent complete classification at tribal and generic level,based on a morphological study of Cyperaceae inflorescence,spikelet,flower,and embryo characters,plus anatomical and other information.Since then,several family-level molecular phylogenetic studies using Sanger sequence data have been published.Here,more than 20 years after the last comprehensive classification of the family,we present the first family-wide phylogenomic study of Cyperaceae based on targeted sequencing using the Angiosperms353 probe kit sampling 311 accessions.In addition,62 accessions available from GenBank were mined for overlapping reads and included in the phylogenomic analyses.Informed by this backbone phylogeny,a new classification for the family at the tribal,subtribal,and generic levels is proposed.The majority of previously recognized suprageneric groups are supported,and for the first time,we establish support for tribe Cryptangieae as a clade including the genus Koyamaea.We provide a taxonomic treatment including identification keys and diagnoses for the 2 subfamilies,24 tribes,and 10 subtribes,and basic information on the 95 genera.The classification includes five new subtribes in tribe Schoeneae:Anthelepidinae,Caustiinae,Gymnoschoeninae,Lepidospermatinae,and Oreobolinae. | Isabel Larridon Alexandre R.Zuntini Étienne Léveillé-Bourret Russell L.Barrett Julian R.Starr AMuthama Muasya Tamara Villaverde Kenneth Bauters Grace E.Brewer Jeremy J.Bruhl Suzana M.Costa Tammy L.Elliott Niroshini Epitawalage Marcial Escudero Isabel Fairlie Paul Goetghebeur Andrew LHipp Pedro Jiménez-Mejías Izai ABSabino Kikuchi Modesto Luceño JoséIgnacio Márquez-Corro Santiago Martín-Bravo Olivier Maurin Lisa Pokorny Eric HRoalson Ilias Semmouri David A.Simpson Daniel Spalink WWayt Thomas Karen L.Wilson Martin Xanthos Félix Forest William J.Baker | 2021 | Journal of Systematics and Evolution2021，59，4： | 1 |
| 6 | Phylogeny of Cyperaceae based on DNA sequence data- a new rbcL analysis 显示文摘 | Simpson DA Muasya AM Alves MV Bruhl J J Dhooge S Chase MW Furness CA Ghamkhar K Goetghebeur P Hodkinson TR Marchant AD Reznicek AA Nieuwborg R Roalson EH Smets E Starr JR Thomas WW Wilson KL Zhang XF | 2007 | Ali- so2007，23，： | 1 |
| 7 | Diversity and distribution of sedges on multivariate environmental gradi- ents显示文摘 | SSEGAWA P KAKUDIDI E MUASYA M | 2004 | African Journal of Ecology2004，4，2： | 1 |
| 8 | Effect of harvesting Cryperus papyrus in undisturbed wetland, Lake Naivasha, Kenya 显示文摘 | TERER T TRIEST L MUASYA M A | 2012 | Hydrobiology2012，680，1： | 1 |
| 9 | Diversiy and distribution of sedges on muhivariate environmenlal gradients显示文摘 | Ssegawa P Kakudidi E Muasya M | 2004 | Africa Journal of Ecology2004，42，1： | 1 |
| 10 | Swamps, springs and diatoms: wetlands of the semi-arid Bogoria-Baringo Rift, Kenya显示文摘 | R.B. Owen R.W. Renaut V.C. Hover G.M. Ashley A.M. Muasya | 2004 | Hydrobiologia (-)2004，，1： | 1 |
| 11 | Biology and resource acquisition of mistletoes,and the defense responses of host plants显示文摘Background:Mistletoes are the most successful group of obligatory hemi-parasitic flowering plants that attach to the host via haustorium for obtaining water and minerals.This review aims to assess the current knowledge on mistle-toes host plant recognition,haustorium formation,water/minerals acquisition,and host plants’defense signaling and responses against mistletoe attack.Results:Some mistletoes are host-specific while others are generalists occurring on a wide range of vascular plants.The host nitrogen(N)content,parasite–host chemical interactions,compatibility,and dispersal agents are the main determinant factors for host specificity.Mistletoes take up substantial amounts of water and minerals passively via apoplastic routes,and most are xylem feeders,but could shift to phloem-feeding during the physiological stress of the host plants.Current evidence highlighted that cell wall loosening and modification are critical during the development of the haustorium in the host tissue.This is made possible by the application of physical pressures by the developing haustorium and cell wall degradation using enzymes(xyloglucan endotransglycosylases,glucanase,expansins,etc.)produced by the mistletoe.Host plants defend against mistletoe infection mechanically by producing spines,lignin,suberin,etc.,which discourages dispersers,and chemically defend by killing the infector or inhibiting the establishment of the haustorium using their secondary metabolites such as terpenes,phenolics,and N-containing compounds.Although the host plants’response to mistletoe attack resembles the response to other biotic stresses,unlike short-term stressors,the effect of mistletoe attack is long-term and depends on the parasite load.Infection by mistletoe leads to water and nutrient stress of the host plant and deteriorates its healthy establishment and survival.Conclusion:Mistletoes are heterogeneous group in the order Santalales which have versatile mechanisms for pollination,seed dispersal and nutrient acquisition from host plants.Infection by mistletoes triggers host plant responses,varying from mechanical to chemical mechanisms which are analogous to herbivory defences,and negatively impacts host plant growth and reproduction. | Meseret Muche A.Muthama Muasya Berhanu Abraha Tsegay | 2022 | Ecological Processes2022，11，1： | 1 |
| 12 | Distinct edaphic habitats are occupied by discrete legume assemblages with unique indicator species in the Cape Peninsula of South Africa显示文摘Aims the Cape Peninsula is a small area(471 km2)situated on the south-westernmost tip of the Core Cape Subregion(CCR)of South Africa.Within the Cape Peninsula,Fabaceae are the third most species-rich plant family(162 species)and they have the second highest number of endemic species after the Ericaceae.However,legumes are not the dominant taxa in the vegetation.they tend to show patchy distributions within the landscape and different species assemblages usually occupy particular niches at any given locality.the present study undertook to establish if edaphic factors influence legume species distribution in the Cape Peninsula and to determine the key indicator species for the different assemblages.Methods Soils from 27 legume sites,spanning all major geological substrates of the Cape Peninsula,were analysed for 31 chemical and physi-cal properties.Legume species present at each site were recorded and a presence/absence matrix was generated.Cluster analysis and discriminant function analysis(DFA)were run to group the sites based on overall similarity in edaphic characteristics and to identify the soil parameters contributing towards discriminating the groups.Canonical correspondence analysis(CCA)was used to test for a cor-relation between legume species compositions and edaphic factors.the strength of the association between legume species and site groupings based on edaphic properties was assessed using indicator species analysis.Important findings Based on similarity in overall soil characteristics,the sites formed three clusters:one comprising sites of sandstone geology,one with dune sand sites and the third cluster comprising sites of both shale and granite geologies(hereafter referred to as soil types).the DFA confirmed the distinctness of these clusters and the CCA showed a significant correlation between legume species composition and edaphic factors.the key edaphic parameters were clay content,iron(Fe),potassium(K),sulphur(S)and zinc(Zn).these findings reveal that the Cape Peninsula is edaphically heterogeneous and edaphically distinct habitats contain discrete legume species assemblages that can be distinguished by unique indicator species.Furthermore,multiple soil parameters,rather than a single parameter,are involved.therefore,edaphic factors play a significant role in driving the distribution of legume species in the Cape Peninsula and discrete legume species assemblages occupy distinct habitats. | Meshack N.Dludlu Samson B.M.Chimphango Charles H.Stirton A.Muthama Muasya | 2018 | Journal of Plant Ecology2018，11，4： | 0 |
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