Share to: share facebook share twitter share wa share telegram print page

Exoderme

A exoderme é uma camada (uni ou multiestratificada) da pele, a mais externa do córtex de raiz, constituída por células mais ou menos suberificadas, que podem sofrer uma esclerificação posteriormente. Alguns autores limitam este termo para designar uma camada profunda, abaixo do velame de raízes de epífitas.

A exoderme ocorre abaixo da epiderme e as suas células podem apresentar estrias de Caspary, porém, com maior frequência são descritas como possuidoras de lamela de suberina revestida por uma espessa parede celulósica.

A grande maioria das angiospermas possui exoderme suberizada, que apresenta, como a endoderme, três estádios de formação, e tem plasmodesmata na mesma frequência da endoderme, sugerindo que o transporte simplástico em ambas é semelhante. A exoderme representa uma barreira protetora, do apoplasto do córtex para o solo, e pode ter condutividade variável para o fluxo de água e solutos.

Constituição da exoderme

A exoderme é constituída de apenas um tipo de células ou de células curtas e longas. Enquanto a raiz é jovem, as paredes das células curtas não contêm suberina. Mais tarde poderão suberizar-se. A exoderme pode apresentar várias camadas de espessura.

Bibliografia

  • APPEZZATO-DA-GLÓRIA, B. & CARMELLO-GUERREIRO, S.M. (Eds.) Anatomia vegetal. 3a ed. Viçosa: Editora UFV, 2012.
  • ESAU, Katherine. Anatomia das plantas com sementes. Trad. Morretes, Berta Lange de. Ed. Edgard Blücher LTDA. São Paulo: 1974.

Read other articles:

Konsili Vienne

Bagian dari seri Gereja Katolik tentangKonsili oikumenisGambar Konsili Trente dari era Renaisans Abad Klasik(± 50 – 451) Yerusalem Nikea I Konstantinopel I Efesus Kalsedon Abad Pertengahan Awal(431–870) Konstantinopel II Konstantinopel III Nikea II Konstantinopel IV Abad Pertengahan MadyadanAbad Pertengahan Akhir(1122–1517) Lateran I Lateran II Lateran III Lateran IV Lyon I Lyon II Vienne Konstanz Firenze Lateran V Zaman Modern (1545–1965) Trente Vatikan I Vatikan II  Portal ...

 

Haji Belajar Ngaji

Haji Belajar NgajiGenre Drama Komedi Religi PembuatScreenplay ProductionsDitulis olehTisa TSSutradaraEncep MasdukiPemeran Febby Rastanty Hardi Fadhillah Ramzi Eza Gionino Lionil Hendrik Ustadz Cepot Nadya Arina Rendy Kjaernet Muhamata Youda Masaji Wijayanto Penggubah lagu temaUnguLagu pembukaHidup Hanya Sementara — UnguLagu penutupHidup Hanya Sementara — UnguPenata musikSajuli GambaraNegara asalIndonesiaBahasa asliBahasa IndonesiaJmlh. musim1Jmlh. episode64 (daftar episode)ProduksiP...

 

Pierre Bouvier

Pierre BouvierInformasi latar belakangGenrePop punkAlternative rockPunk rockPop rockLabelLava / AtlanticArtis terkaitSimple Plan, ResetSitus webBouvier's MySpace Pierre Charles Bouvier (lahir 9 Mei 1979) adalah musisi Prancis Kanada, yang dikenal sebagai vokalis untuk band punk pop, Simple Plan. Pada usia 13, ia mendirikan punk rock band Reset dengan sahabatnya Chuck Comeau di mana ia adalah bassis dan vokalis. Dia tidak merasa senang dengan Reset dan meninggalkan band pada tahun 1999, setahu...

Bästeträsk

BästeträskInsjö Norra Bästeträsk, mot Ar.Geografiskt lägeLand SverigeLänGotlands länKommunGotlands kommunLandskapGotlandSockenFleringe sockenKoordinater   WGS 8457°53′56″N 18°55′43″Ö / 57.89886°N 18.92848°Ö / 57.89886; 18.92848 (Bästeträsk)  SWEREF 99 TM6424214, 732784 Bästeträsk Topografiska kartan över Bästeträsk. MåttAreal6,52 km² [1]Höjd6 m ö.h. [2]Strandlinje14,8 km [2]FlödenHuvudavr...

 

包岑戰役

  欲查詢1945年的戰役，請參閱包岑會戰 (1945年) 包岑會戰第六次反法同盟的一部分包岑會戰日期1813年5月19日－5月20日地点薩克森包岑结果 法國獲勝参战方 法蘭西帝國 普魯士王國 俄羅斯帝國指挥官与领导者 拿破崙一世米歇爾·內伊熱羅·迪羅克† 格布哈德·馮·布呂歇爾[1] 彼得·維特根施泰因[2]兵力 115,000人[3] 96,000人[3]伤亡与损失 ~20,000人[4&...

 

Ahrensmoor

Ahrensmoor Gemeinde Ahlerstedt Wappen von Ahrensmoor Koordinaten: 53° 24′ N, 9° 29′ O53.3961111111119.488055555555641Koordinaten: 53° 23′ 46″ N, 9° 29′ 17″ O Höhe: 41 m Fläche: 3,32 km² Einwohner: 452 (2003) Bevölkerungsdichte: 136 Einwohner/km² Eingemeindung: 1. Juli 1972 Postleitzahl: 21702 Vorwahl: 04166 Ahrensmoor (Niedersachsen) Lage von Ahrensmoor in Niedersachsen Gedenkstein anlässlich des 200-j...

Kemiskinan ekstrem

Jumlah penduduk dengan pendapatan kurang dari $1,90, $3,20, $5,50, dan $10 di dunia. Merah = Jumlah orang kemiskinan ekstrim; Hijau = Penduduk Non-Kemiskinan. Jumlah penduduk yang hidup dalam kemiskinan ekstrem, menurut wilayah dunia 1987 hingga 2013. Kemiskinan ekstrem, atau kemiskinan absolut, adalah sejenis kemiskinan didefinisikan oleh Perserikatan Bangsa-Bangsa (PBB) sebagai suatu kondisi yang tidak dapat memenuhi kebutuhan primer manusia, termasuk makanan, air minum bersih, fasilitas sa...

 

Präparat

Dieser Artikel behandelt natur- und humanwissenschaftliche Untersuchungsobjekte. Zu pharmazeutischen Präparaten siehe Pharmazie, zu biologisch-dynamischen Präparaten siehe Biologisch-dynamische Landwirtschaft: Die biologisch-dynamischen Präparate. Präparatesammlung des Greifswalder Instituts für Pathologie Ein Präparat (lateinisch praeparatum ‚das Vor-, Zubereitete‘) ist in der Naturkunde einschließlich der Humanmedizin ein Objekt, das durch entsprechende Verfahren zu Anschauungs-,...

 

919 Third Avenue

Office skyscraper in Manhattan, New York 919 Third AvenueGeneral informationStatusCompletedTypeOfficeLocation919 3rd AvenueNew York City, New York, USACoordinates40°45′32.5″N 73°58′4.8″W / 40.759028°N 73.968000°W / 40.759028; -73.968000Completed1971Opening1971OwnerSL GreenHeightRoof615 ft (187 m)Technical detailsFloor count47Floor area1,399,986 sq ft (130,063 m2)Design and constructionArchitect(s)Skidmore, Owings & MerrillStruct...

Camden (Alabama)

Camden Plaats in de Verenigde Staten Vlag van Verenigde Staten Locatie van Camden in Alabama Locatie van Alabama in de VS Situering County Wilcox County Type plaats Town Staat Alabama Coördinaten 31° 60′ NB, 87° 18′ WL Algemeen Oppervlakte 10,87 km² - land 10,84 km² - water 0,03 km² Inwoners (2006) 2.232 (206 inw./km²) Hoogte 63 m Overig ZIP-code(s) 36726 FIPS-code 11512 Detailkaart Foto's Wilcox County Courthouse in Camden Portaal    Verenigde Staten Camden is ee...

 

Offsiders

This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: Offsiders – news · newspapers · books · scholar · JSTOR (January 2017) (Learn how and when to remove this template message) Australian TV series or program OffsidersA previous Offsiders title cardGenreSportsPresented byKelli UnderwoodCountry of originAustr...

 

Resultados do Carnaval do Rio de Janeiro em 1994

Resultados do Carnaval do Rio de Janeiro em 1994 Alegoria da Imperatriz no desfile de 1994. Escola conquistou seu quarto título de campeã. Escolas campeãs Grupo Especial Imperatriz Leopoldinense Grupo 1 Unidos da Villa Rica Grupo 2 Difícil é o Nome Grupo 3 Acadêmicos do Dendê Avaliação Alegria da Zona Sul Blocos campeões Empolgação A-1 Coração da Coroa Enredo Grupo 1 Corações Unidos Enredo Grupo 2 Mocidade Unida da Mineira Enredo Grupo 3 Flor da Vila Tiradentes Enredo Grupo 4 ...

Claria Horn Boom

American judge (born 1969) Claria Horn BoomBoom in 2022Member of the United States Sentencing CommissionIncumbentAssumed office August 5, 2022Appointed byJoe BidenPreceded byWilliam H. Pryor Jr.Judge of the United States District Court for the Eastern District of KentuckyJudge of the United States District Court for the Western District of KentuckyIncumbentAssumed office April 11, 2018Appointed byDonald TrumpPreceded byJennifer B. Coffman Personal detailsBornClaria Denise Horn1969 (ag...

 

Celtic Warriors

For other uses, see Celtic warrior. This article includes a list of general references, but it lacks sufficient corresponding inline citations. Please help to improve this article by introducing more precise citations. (July 2023) (Learn how and when to remove this template message) Rugby teamCeltic WarriorsFounded2003Disbanded2004; 19 years ago (2004)LocationBridgend, WalesPontypridd, WalesGround(s)Brewery Field[n 1] (Capacity: 12,000)ChairmanLeighton SamuelCoach(es...

 

Eerste Oorlog om de Carnatic

De overgave van Madras, tekening door Jacques François Joseph Swebach (1769-1823). De Eerste Oorlog om de Carnatic (1746-1748) was een militair conflict tussen de Britse en Franse handelscompagnieën in het zuiden van India. Het was onderdeel van de Oostenrijkse Successieoorlog. Er werd gestreden om de verschillende Europese koloniën langs de Coromandelkust, maar ook om de troon van de nawab van Arcot, de heerser over het binnenland, die zich in de strijd mengde. De oorlog had tot gevolg da...

Sutter County, California

County in California, United States County in California, United StatesSutter County, CaliforniaCountyCounty of SutterImages, from top down, left to right: Sutter Buttes terrain, Live Oak Blvd near Pennington Road in the City of Live Oak, downtown of Yuba City SealInteractive map of Sutter CountyLocation in the state of CaliforniaCountryUnited StatesStateCaliforniaRegionSacramento ValleyMetro areaSacramento metropolitan areaIncorporatedFebruary 18, 1850[1]Named forJohn Augustus Sutter...

 

Penawaran Tokyo untuk Olimpiade Musim Panas 2020

Penawaran untuk Olimpiade Musim Panas 2020 (Olimpiade Musim Panas 2020)IkhtisarOlimpiade Musim Panas 2020 Paralimpiade Musim Panas 2020Pemenang: Tokyo Runner-up: Istanbul Daftar pendek: Madrid PenjelasanKotaTokyo, JepangKetuaShintaro IshiharaNOCKomite Olimpiade Jepang (JOC)Tuan rumah pesta olahraga sebelumnyaOlimpiade Musim Panas 1964Penawaran untuk 2016KeputusanHasilPemenang (60 suara) Tokyo 2020 (東京 2020code: ja is deprecated , Tōkyō Nisen-Nijū) adalah penawaran yang berhasil un...

 

Cartoon Network Amazone

This article relies excessively on references to primary sources. Please improve this article by adding secondary or tertiary sources. Find sources: Cartoon Network Amazone – news · newspapers · books · scholar · JSTOR (September 2017) (Learn how and when to remove this template message) This article contains content that is written like an advertisement. Please help improve it by removing promotional content and inappropriate external links, and by ad...

Goddess movement

Modern revival of divine feminine or female-centered spirituality One version of the Spiral Goddess symbol of modern Paganism The Goddess movement is a revivalistic Neopagan religious movement[1] which includes spiritual beliefs and practices that emerged predominantly in the Western world[1] (North America, Western Europe, Australia, and New Zealand) during the 1970s.[2] The movement grew as a reaction both against Abrahamic religions,[1] which exclusively hav...

 

Inuyama Domain

This article does not cite any sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: Inuyama Domain – news · newspapers · books · scholar · JSTOR (March 2020) (Learn how and when to remove this template message) Inuyama Domain犬山藩Domain of Japan1600–16111616–1871CapitalInuyama CastleHistory • TypeDaimyō Historical eraEdo period• Esta...

 
Kembali kehalaman sebelumnya