Cambial Activity in Acacia raddiana Savi

Fahn, A.; Waisel, Y.; Benjamini, L.

doi:10.1093/oxfordjournals.aob.a084240

Cited by 31 publications

(21 citation statements)

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“…Rapid divisions and differentiation of its derivatives occurs with the arrival of rains in June and differentiation of xylem and phloem culminates in monsoon when the rains are heavy. Similar observations are also made by Fahn et al (1968). Furthermore, the occurrence of large intercellular spaces in the cambial rays during drier part of the year and their disappearance with the onset of rains in June also confirms the water stress during the cambial rest.…”

Section: Discussionsupporting

confidence: 85%

“…Similar behavior of cambium has been noticed in Acacia species growing in desert conditions [2,12]. The possible explanation is that those trees that have access to water all the year around would show continuous cambial activity.…”

Section: Discussionsupporting

confidence: 69%

“…As a semideciduous tree, there is no direct correlation between cambial activity and phenology in Azadirachta. It seems true that the effect of buds and new leaves on cambial activity is considered to be more local in evergreen trees than deciduous ones [12].…”

Section: Discussionmentioning

confidence: 99%

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Relationship between seasonal cambial activity, development of xylem and phenology in Azadirachta indica growing in different forests of Gujarat State

Rao

Rajput

2001

Ann. For. Sci.

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-Seasonal cycle of cambial activity was compared among the trees of Azadirachta indica growing in Moist Deciduous (MDF), Dry Deciduous (DDF) and Scrub land Forest (SF) of Gujarat State. Radial growth occurred in two growth flushes in MDF and DDF. Cambial cell divisions in MDF started in February and June resulting maximal radial growth in August-September when the rains were heavy and ceased in January and May during the drier part of the year. In DDF the first flush of growth commenced in January with maximal xylem development in April and ceased in May. The second flush of cambial activity began in June with the arrival of rains, reached peak in October and ceased in December. Cambium was active throughout the year in SF and attained its peak activity thrice i.e. in February, July and October. With complete maturation of leaves in November, the cell divisions were rather slow in MDF and SF whereas no divisions were encountered in DDF. Cambial rays exhibited large intercellular spaces during drier months in all the three forests. Seasonal behavior of vascular cambium was discussed in relation to phenology and local climatic conditions. Azadirachta / intercellular spaces / vascular cambium / xylem Résumé -Relation entre l'activité saisonnière du cambium, la croissance radiale du xylème et la phénologie chez Azadirachta indica dans différents types d'écosystèmes forestiers de l'état du Gujarat. Les cycles saisonniers de l'activité cambiale chez Azadirachta indica dans différents types d'écosystèmes forestiers de l'état de Gujarat ont été comparés entre des arbres provenant de forêts humide décidue (MDF), sèche décidue (DDF) et de savane arborée (SF). La division des cellules cambiales commence en février et juin pour les MDF, ce qui se traduit par une croissance radiale maximale en août-septembre, au moment des fortes pluies, et un arrêt en janvier et mai pendant les périodes les plus sèches de l'année. Dans les DDF, le premier démarrage de croissance radiale commence en janvier, avec un maximum en avril et un arrêt en mai. Une seconde période d'activité commence en juin avec l'arrivée des pluies, atteint son maximum en octobre et s'arrête en décembre. Dans les SF le cambium reste actif toute l'année avec trois pics d'activité en février, juillet et octobre. Lorsque les feuilles arrivent à maturité complète en novembre, la vitesse de division cellulaire du cambium est relativement faible dans les MDF et le SF et nulle dans les DDF. Dans le cambium, les rayons présentent des espaces intercellulaires importants pendant les mois secs pour les trois types de forêts. Le fonctionnement saisonnier du cambium est ensuite discuté en relation avec la phéno-logie et les conditions climatiques locales.Aazadirachta / activité cambiale / climat / phénologie / xylème Ann. For. Sci. 58 (2001) [691][692][693][694][695][696][697][698] 691

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Section: Discussionsupporting

confidence: 85%

Section: Discussionsupporting

confidence: 69%

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Relationship between seasonal cambial activity, development of xylem and phenology in Azadirachta indica growing in different forests of Gujarat State

Rao

Rajput

2001

Ann. For. Sci.

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“…Though D. indica L. growing in the sub-tropical wet climate within a limited habitat shows distinct annual rhythm in the cambial activity, it results in the formation of invisible growth ring annually (Carlquist 1980;Liphschitz et al 1981;Fahn et al 1968). In Quercus costaricensis Liebm.…”

Section: Discussionmentioning

confidence: 99%

“…The majority of past studies on cambial activity are pertained to plants growing in temperate region with definite seasonal climates (Bailey 1920;Bannan 1955Bannan , 1962Antonova 1996Antonova , 1997Antonova and Stasova 1997;Rensing and Samuel 2004). The seasonal variations of cambial activity and annual rhythm of xylem and phloem differentiation in tropical trees, semi-arid and arid regions have been studied in quite a number of plants (Coster 1927(Coster , 1928Chowdury 1939Chowdury , 1940Chowdury , 1941Koriba 1958;de Alvim 1964;Fahn et al 1968;Amobi 1974;Ghouse and Hashmi 1978;Denne and Dodds 1981;Dave and Rao 1982;Venugopal 1986;Venugopal and Krishnamurthy 1987;Creber and Chaloner 1990;Larson 1994;Priya and Bhat 1999;Borchert 1999;Rao and Rajput 2001a, b). The effect of genetic and environmental factors on shoot growth and xylem formation has been studied in the West African tropical tree Terminalia superba Engl.…”

mentioning

confidence: 99%

Cambial activity and annual rhythm of xylem production of elephant apple tree (Dillenia indica Linn.) in relation to phenology and climatic factor growing in sub-tropical wet forest of northeast India

Venugopal

Liangkuwang

2006

Trees

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Differential climatic conditions drive growth of Acacia tortilis tree in its range edges in Africa and Asia

Uni

Lerner²,

Smit

et al. 2023

American J of Botany

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Premise Tree growth is a fundamental biological process that is essential to ecosystem functioning and water and element cycling. Climate exerts a major impact on tree growth, with tree species often requiring a unique set of conditions to initiate and maintain growth throughout the growing season. Still, little is known about the specific climatic factors that enable tree growth in savannah and desert tree species. Among the global tree species, Acacia tortilis occupies one of the largest distribution ranges (crossing 6500 km and 54 latitudes), spanning large parts of Africa and into the Middle East and Asia. Methods Here we collected climate data and monitored Acacia tortilis tree growth (continuous measurements of stem circumference) in its southern and northern range edges in South Africa (SA) and Israel (IL), respectively, to elucidate whether the growth–climate interactions were similar in both edges. Results Growth occurred during the summer (between December and March) in SA and in IL during early summer and autumn (April–June and October–November, respectively). Surprisingly, annual growth was 40% higher in IL than in SA. Within the wide distribution range of Acacia tortilis, our statistical model showed that climatic drivers of tree growth differed between the two sites. Conclusions High temperatures facilitated growth at the hot and arid IL site, while high humidity permitted growth at the more humid SA site. Our results confer an additional understanding of tree growth adaptation to extreme conditions in Acacia's world range edges, a major point of interest with ongoing climate change.

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Cambial Activity in Acacia raddiana Savi

Cited by 31 publications

References 0 publications

Relationship between seasonal cambial activity, development of xylem and phenology in Azadirachta indica growing in different forests of Gujarat State

Relationship between seasonal cambial activity, development of xylem and phenology in Azadirachta indica growing in different forests of Gujarat State

Cambial activity and annual rhythm of xylem production of elephant apple tree (Dillenia indica Linn.) in relation to phenology and climatic factor growing in sub-tropical wet forest of northeast India

Differential climatic conditions drive growth of Acacia tortilis tree in its range edges in Africa and Asia

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