The Development and Distribution of the Endodermis and an Associated Oxidase System in Monocotyledonous Plants

Fleet, D. S. Van

doi:10.1002/j.1537-2197.1942.tb13965.x

Cited by 33 publications

(11 citation statements)

References 25 publications

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“…For the species in this study, during the formation of adventitious roots, we observed that there was continuity between the root and rhizome of the vascular tissues and of the endodermis and pericycle. This formation has also been described in other Cyperaceae (Wills et al 1980, Menezes et al 2005 and monocotyledons, such as Agavaceae, Alismataceae, Commelinaceae, Eriocaulaceae, Heliconiaceae, Velloziaceae, Rapateceae and Zingiberaceae (Van Fleet 1942, Simão and Scatena 2001, Alonso and Moraes-Dallaqua 2004, Menezes et al 2005, Cattai and Menezes 2010, reinforcing the presence of tissue continuity in vegetative organs.…”

Section: Discussionsupporting

confidence: 53%

Developmental anatomy of Cyperus laxus (non-Nranz) and Fimbristylis dichotoma (Kranz) (Cyperaceae, Poales) and tissue continuity

Martins

Scatena

2013

An. Acad. Bras. Ciênc.

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The Cyperaceae species are present in different ecosystems and constitute the herbaceous extract. Of the approximately 5,500 species of the family; a third has Kranz anatomy, representing an important characteristic of the taxonomy and phylogeny of the group. In Cyperus laxus L. (non-Kranz) and Fimbristylis dichotoma Vahl (Kranz), development begins with germination that is marked by the emergence of the coleoptiles, followed by the primary root, which is ephemeral. The rhizome originates from the mesocotyl and it promotes the vascular connection between the roots, leaves and scapes. The continuity of the tissues is evidenced by the presence of an endodermis and pericycle in all vegetative organs. Leaves and scapes differ between the two species by the arrangement of mesophyll cells, which is regular in Cyperus laxus (non-Kranz) and arranged radially in Fimbristylis dichotoma (Kranz). Also differ in the number of bundles sheaths: two in Cyperus laxus (non-Kranz) and three in Fimbristylis dichotoma (Kranz). The outer bundle sheath in both species constitutes the endodermis, and the inner sheath in Cyperus laxus and the middle and inner sheaths in Fimbristylis dichotoma constitute the pericycle.

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Section: Discussionsupporting

confidence: 53%

Developmental anatomy of Cyperus laxus (non-Nranz) and Fimbristylis dichotoma (Kranz) (Cyperaceae, Poales) and tissue continuity

Martins

Scatena

2013

An. Acad. Bras. Ciênc.

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“…Water stress may be implicated, since the exposed zone was in air with less than 100% humidity. The stimulus may be a gas effect, related to oxygen (as suggested by Van Fleet 1942) or carbon dioxide tensions. Experiments with variable humidities and mixtures of gasses would provide the answer.…”

Section: Discussionmentioning

confidence: 99%

“…According to Van Fleet (1942) endodermal development (including suberization and wall thickening) is most effectively promoted by an alternation of dry and wet (aerated) conditions in several species of Allium. Others have reported that endodermal and exodermal development is promoted by drought (e.g.…”

Section: Introductionmentioning

confidence: 99%

Effects of exposure to humid air on epidermal viability and suberin deposition in maize (Zea mays L.) roots

Enstone

Peterson

1998

Plant Cell & Environment

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When the basal zones of 4-d-old hydroponically grown maize (Zea mays L. cv. Seneca Horizon) roots were exposed to moist air for 2 d, the development of both endodermis and exodermis was affected. In the endodermis, Casparian bands enlarged and more cells developed suberin lamellae. The most striking effect was seen in the exodermis. In submerged controls, only 4% of the cells had Casparian bands, whereas in root regions exposed to air, 93% developed these structures. Similarly, in submerged roots 11% of the exodermal cells had either developing or mature suberin lamellae compared with 92% in the air-treated region. The majority of epidermal cells remained alive in the zone exposed to air. Some cell death had occurred earlier in the experiment when the seedlings were transferred from vermiculite to hydroponic culture. The precise stimulus(i) associated with the air treatment which led to accelerated development in both endodermis and exodermis is as yet unknown.

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“…(Simão & Scatena 2001) apresentam organização anatômica do rizoma semelhante ao de Costus arabicus, ou seja, com delimitação entre córtex e cilindro vascular. Em Canna indica L. (Cannaceae), a presença da endoderme no rizoma foi inicialmente observada por Van Fleet (1942); e um estudo com Canna edulis Kerr-Gawler constatou que no rizoma dessa espécie, a endoderme com estrias de Caspary delimita o córtex do cilindro vascular (Alonso & Moraes-Dallaqua 2004), característica também observada em Costus arabicus. Menezes et al (2005) também constataram a presença da endoderme no rizoma de Zingiber offi cinale Roscoe (Zingiberaceae).…”

Section: Discussionunclassified

Aspectos fisiológicos, anatômicos e ultra-estruturais do rizoma de Costus arabicus L. (Costaceae) sob condições de déficit hídrico

Costa

Hayashi

Carvalho

et al. 2012

Hoehnea

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-(Physiological, anatomical and ultrastructural aspects of the rhizome of Costus arabicus L. (Costaceae) under water defi cit conditions). Costus arabicus L. is an herbaceous species, native to the forest that accumulates starch in the rhizome as the main reserve carbohydrate. Water stress is one the most important environmental factor that regulates plant growth and development, leading to changes in physiological, biochemical and anatomical traits. The aim of this study was to evaluate the effect of water defi cit on the anatomy, carbohydrate concentration and ultrastructure of starch grains of the rhizome of Costus arabicus L. through the following water regimes: plants irrigated daily and every seven (7d) and 15 days (15d). Anatomical and ultrastructural traits of the rhizome, relative water content in leaves (RWC), leaf water potential (Ψw), osmotic potential of the rhizome (Ψo), total soluble sugars (TSS), reducing sugars (RS) and starch of the rhizome were evaluated. We observed signifi cant reductions in Ψw and Ψs in 15d plants, but with small variations in the RWC. The anatomical analysis showed that the rhizome is covered by epidermis or stratifi ed cork and there is a delimitation between the cortical and vascular regions. We detected the presence of numerous starch grains and idioblasts with phenolic contents in the parenchyma of the two regions. Changes in the anatomy of the rhizomes were only observed in plants irrigated every 15 days, in which cells of covering tissue and the outer cortical layers became more fl attened and sinuous walls; however, no ultrastructural differences were observed on the starch grains. The water defi cit imposed was suffi cient to generate physiological, biochemical and anatomical changes in plants of C. arabicus L. Such alterations suggest the occurence of an avoidance mechanism and that anatomical changes were dependent of the intensity and duration of water defi cit. Key words: drought, starch, water stress RESUMO -(Aspectos fi siológicos, anatômicos e ultra-estruturais do rizoma de Costus arabicus L. (Costaceae) sob condições de défi cit hídrico). Costus arabicus L. é uma espécie herbácea, nativa de mata, que acumula em seu rizoma amido como principal carboidrato de reserva. A seca é um dos fatores ambientais que pode regular o crescimento e o desenvolvimento das plantas, levando a alterações nas características fi siológicas, bioquímicas e anatômicas. Este trabalho objetivou avaliar a infl uência do défi cit hídrico na anatomia, no conteúdo de carboidratos e na ultra-estrutura dos grãos de amido do rizoma de Costus arabicus L. submetidos aos ciclos de rega diário (Controle) e a cada sete (7d) e 15 dias (15d). Foram avaliados aspectos anatômicos e ultra-estruturais do rizoma, conteúdo relativo de água nas folhas (CRA), potencial hídrico foliar (Ψw), potencial osmótico do rizoma (Ψs), açúcares solúveis totais (AST) e redutores (AR) e amido do rizoma. Observaram-se reduções signifi cativas do Ψw e do Ψs nas plantas 15d, porém com pequenas variações no CRA. An...

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The Development and Distribution of the Endodermis and an Associated Oxidase System in Monocotyledonous Plants

Cited by 33 publications

References 25 publications

Developmental anatomy of Cyperus laxus (non-Nranz) and Fimbristylis dichotoma (Kranz) (Cyperaceae, Poales) and tissue continuity

Developmental anatomy of Cyperus laxus (non-Nranz) and Fimbristylis dichotoma (Kranz) (Cyperaceae, Poales) and tissue continuity

Effects of exposure to humid air on epidermal viability and suberin deposition in maize (Zea mays L.) roots

Aspectos fisiológicos, anatômicos e ultra-estruturais do rizoma de Costus arabicus L. (Costaceae) sob condições de déficit hídrico

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