Wood Anatomy and the Development of Interxylary Phloem of Ipomoea hederifolia Linn. (Convolvulaceae)

Rajput, Kishore S.; Patil, Vijay S.; Rao, K. S.

doi:10.1007/s00344-013-9334-8

Cited by 28 publications

(23 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Por ejemplo, en el patrón foraminado se forman pequeñas lagunas de floema incluidas en el xilema, a partir de cámbiumes intraxilares, (Lowell & Lucansky, 1986Rajput et al, 2008Rajput et al, , 2013. Además se ha reportado el desarrollo de cámbiumes con orientación invertida, que originan xilema centrífugamente y floema centrípetamente (Rajput et al, 2008;Terrazas et al, 2011).…”

Section: Discussionunclassified

See 1 more Smart Citation

Variante cambial en tallos de Ipomoea (Convolvulaceae) nativas de Argentina.

Delbón

Sánchez²,

Cosa³

2016

Bol. Soc. Argent. Bot.

View full text Add to dashboard Cite

Ipomoea es un género diversificado y complejo, compuesto por herbáceas, lianas y enredaderas leñosas, y un pequeño grupo de arbustos y árboles. Llama la atención que todas las especies estudiadas anteriormente presentaron diferentes tipos de variante cambial en sus tallos, independientemente del modo de vida, excepto dos taxones con crecimiento secundario normal, una liana y un árbol. Por ello, en el presente trabajo se planteó el estudio de tres enredaderas nativas de Argentina, Ipomoea cairica, I. purpurea e I. rubriflora, y de I. carnea ssp. fistulosa, árbol con crecimientonormal, con el fin de comparar el desarrollo de sus tallos y aportar datos de interés para dilucidar sus relaciones filogenéticas. Las cuatro especies estudiadas presentaron igual ontogenia y anatomía desus tallos con crecimiento primario, lo que apoyaría sus estrechas relaciones filogenéticas. Por otro lado, las enredaderas presentaron sólo dos tipos de variante cambial, el patrón lobado y el de cámbiumsupernumerario. Se puede inferir que en Ipomoea el tipo de crecimiento secundario, así como los tipos de variante cambial, no estarían directamente relacionados con el hábito; sin embargo, otras características del leño pueden ponerse a consideración como la proporción de tejido parenquimático y características de los vasos.

show abstract

Section: Discussionunclassified

“…Finalmente, el desarrollo de cámbiumes en los radios xilemáticos con capacidad de formar xilema y floema secundarios fue reportado solo en I. obscura (L.) Ker Gawl. y sería el único en la familia (Rajput et al, 2013).…”

Section: Discussionunclassified

Variante cambial en tallos de Ipomoea (Convolvulaceae) nativas de Argentina.

Delbón

Sánchez²,

Cosa³

2016

Bol. Soc. Argent. Bot.

View full text Add to dashboard Cite

show abstract

“…Therefore, it was difficult to explain the variations in wtRC according to changes in precipitation. The ray cell may have thick or thin walls (Carlquist, 2001;Rajput et al, 2013), but only a few species have thick-walled rays. For example, rays in Symbolanthus macranthus G. Don are thick-walled, with a thickness of 2.5 μm (Carlquist and Grant, 2005).…”

Section: Discussionmentioning

confidence: 99%

Effect of Provenance and Climate on Xylem Anatomy of Haloxylon Ammodendron (C. A. Mey) Bunge in the Gurbantunggut Desert, China

Zhou¹

2017

Appl Ecol Env Res

View full text Add to dashboard Cite

Abstract. Although Haloxylon ammodendron is widely distributed in desert regions of both Asia and Africa, the anatomical structure of its xylem is rarely reported. In this study, the differences in xylem anatomical characteristics among five provenances in the southern Gurbantunggut Desert were compared and the effects of climatic factors on anatomical features were analyzed. The results showed that the xylem responded to low precipitation by increasing ray density and ray height to improve the storage of water and starch to combat drought stress. In an arid provenance (Jinghe), H. ammodendron had wide vessels to improve conductivity. Moreover, they increased the vessel wall thickness to decrease its sensitivity to embolism. Both average temperature in January and maximum wind velocity from April to June were significantly related to the wall thickness of the fiber (P ＜ 0.05), indicating that a thicker fiber cell wall could provide higher mechanical resistance to steady stems and improve vessel conduction in low temperature and strong wind conditions. These results indicate that there is high plasticity in the xylem anatomical structures of H. ammodendron in response to different desert conditions and also explain the adaptation of the plant to a wide range of Asian and African deserts.

show abstract

“…Occurrence of wider vessels with rays as compared to self-supporting stage and increased number of axial parenchyma is characteristic to climbing habit (Ellmore & Ewers 1985, Fisher & Ewers 1989, Ewers et al 1991, Rowe & Speck 1996, Carlquist 2001, Rajput et al 2013. Ewers et al (2015) correlated, increase in vessel diameter and their frequency with the leaf surface area and amount of water required for transpiration while decreased mechanical tissue helps to increase stem flexibility by decreasing the stem stiffness.…”

Section: Discussionmentioning

confidence: 99%

“…All these features provide stem flexibility for twisting around the host without any disadvantageous effect on conductivity of the secondary xylem (Rowe & Speck 2005. Though, wider vessels have higher efficiency of water conduction but they are considered to be extremely susceptible to air embolism (Ellmore & Ewers 1985, Ewers et al 1991, Rowe & Speck 1996, Carlquist 2001, Rajput et al 2013. Experimental studies carried out on Tynanthus cognatus Miers.…”

Section: Discussionmentioning

confidence: 99%

Stem anatomy and development of interxylary phloem in Strychnos bredemeyeri (Loganiaceae)

Moya

Gondaliya

Rajput

2017

An Biol

View full text Add to dashboard Cite

Anatomía del tallo y desarrollo del floema interxilar en Strychnos bredemeyeri (Loganiaceae)En Strychnos bredemeyeri, pequeñas porciones de cambium dejan temporalmente de producir xilema secundario y produce más floema centrífugamente. Un nuevo segmento del cambium se diferencia en la parte exterior de este floema formado, entonces estos se unen al cilindro regular para formar un anillo. Esta repetida actividad da como resultado la inclusión de islas de floema dentro del xilema secundario, llamado floema interxilar. Luego aparecen nuevos elementos del floema asociado al cambium y a las islas de floema que aplastan los elementos no conductores de islas de floema. Junto al floema interxilar, el floema intraxilar está formado por la adición desde las células marginales de la médula. Posteriormente, pequeños arcos del cambium interno se inician en el borde interno del protoxilema en tallos gruesos. Palabras clave:Variante en el cambium, Floema incluso, Floema interxilar, Liana, Floema intraxilar, Xilema secundario, Floema secundario. AbstractIn Strychnos bredemeyeri small segments of the cambium cease to produce secondary xylem temporarily and produce more phloem centrifugally. A new segment of the cambium differentiates outside to this phloem, which unite with the regular cylinder to form a complete ring by leaving the cambium segment in the furrow. Such repeated activity of cambium results in inclusion of phloem islands within the secondary xylem, called interxylary phloem. New phloem elements added by the cambium associated with phloem islands crush the non-conducting sieve elements in older phloem islands. Beside interxylary phloem, intraxylary phloem is added from the marginal pith cells. Subsequently, small arcs of the internal cambium initiate on the inner margin of the protoxylem in thick stems.

show abstract

Wood Anatomy and the Development of Interxylary Phloem of Ipomoea hederifolia Linn. (Convolvulaceae)

Cited by 28 publications

References 27 publications

Variante cambial en tallos de Ipomoea (Convolvulaceae) nativas de Argentina.

Variante cambial en tallos de Ipomoea (Convolvulaceae) nativas de Argentina.

Effect of Provenance and Climate on Xylem Anatomy of Haloxylon Ammodendron (C. A. Mey) Bunge in the Gurbantunggut Desert, China

Stem anatomy and development of interxylary phloem in Strychnos bredemeyeri (Loganiaceae)

Contact Info

Product

Resources

About