Cambial Activity of Moringa peregrina (Forssk.) Fiori in Arid Environments

Moringa peregrina (Forssk.) Fiori, one of 13 species of the Moringaceae family widely distributed throughout the dry tropics, has the potential to become one of the most economically important medicinal plants in Egypt. However, despite its tolerance for drought and heat, it is also threatened by in...

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Main Authors: Holger Gärtner, Emad Farahat
Format: Article
Language:English
Published: Frontiers Media S.A. 2021-11-01
Series:Frontiers in Plant Science
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fpls.2021.760002/full
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author Holger Gärtner
Emad Farahat
author_facet Holger Gärtner
Emad Farahat
author_sort Holger Gärtner
collection DOAJ
description Moringa peregrina (Forssk.) Fiori, one of 13 species of the Moringaceae family widely distributed throughout the dry tropics, has the potential to become one of the most economically important medicinal plants in Egypt. However, despite its tolerance for drought and heat, it is also threatened by increasing temperatures and decreasing precipitation. Although the phenophase of this species is well documented, almost nothing is known about its period of cambial activity in desert regions. Ring formation and the general environmental adaptability of trees are affected by the timing of cambial activation. In our study site, we observe a distinct coupling of the development of new green leaves at the onset of vegetative growth in October and the phase of cambial activity (November–January). The onset of cambial activity seems to be related to a drop in temperature in October and the onset of torrential rains in the region. There might even be a short phase between the end of cambial activity and the onset of bud formation without xylem formation, but with photosynthetic activity. If so, we assume that all assimilates are stored as non-structural carbohydrates (NSC) in the parenchyma of the new ring. This potential gap opens new questions regarding the correlation between NSC storage capacity and the timing of remobilization for subsequent ring formation.
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spelling doaj.art-df59e1c8bdba421ab2817a0a5e1f36d22022-12-21T22:39:12ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2021-11-011210.3389/fpls.2021.760002760002Cambial Activity of Moringa peregrina (Forssk.) Fiori in Arid EnvironmentsHolger Gärtner0Emad Farahat1Dendrosciences, Forest Dynamics, Swiss Federal Research Institute for Forest, Snow and Landscape Research (WSL), Birmensdorf, SwitzerlandBotany and Microbiology Department, Faculty of Science, Helwan University, Cairo, EgyptMoringa peregrina (Forssk.) Fiori, one of 13 species of the Moringaceae family widely distributed throughout the dry tropics, has the potential to become one of the most economically important medicinal plants in Egypt. However, despite its tolerance for drought and heat, it is also threatened by increasing temperatures and decreasing precipitation. Although the phenophase of this species is well documented, almost nothing is known about its period of cambial activity in desert regions. Ring formation and the general environmental adaptability of trees are affected by the timing of cambial activation. In our study site, we observe a distinct coupling of the development of new green leaves at the onset of vegetative growth in October and the phase of cambial activity (November–January). The onset of cambial activity seems to be related to a drop in temperature in October and the onset of torrential rains in the region. There might even be a short phase between the end of cambial activity and the onset of bud formation without xylem formation, but with photosynthetic activity. If so, we assume that all assimilates are stored as non-structural carbohydrates (NSC) in the parenchyma of the new ring. This potential gap opens new questions regarding the correlation between NSC storage capacity and the timing of remobilization for subsequent ring formation.https://www.frontiersin.org/articles/10.3389/fpls.2021.760002/fullarid environmentspinningcambial activitywood formationisotopesvegetative growth
spellingShingle Holger Gärtner
Emad Farahat
Cambial Activity of Moringa peregrina (Forssk.) Fiori in Arid Environments
Frontiers in Plant Science
arid environments
pinning
cambial activity
wood formation
isotopes
vegetative growth
title Cambial Activity of Moringa peregrina (Forssk.) Fiori in Arid Environments
title_full Cambial Activity of Moringa peregrina (Forssk.) Fiori in Arid Environments
title_fullStr Cambial Activity of Moringa peregrina (Forssk.) Fiori in Arid Environments
title_full_unstemmed Cambial Activity of Moringa peregrina (Forssk.) Fiori in Arid Environments
title_short Cambial Activity of Moringa peregrina (Forssk.) Fiori in Arid Environments
title_sort cambial activity of moringa peregrina forssk fiori in arid environments
topic arid environments
pinning
cambial activity
wood formation
isotopes
vegetative growth
url https://www.frontiersin.org/articles/10.3389/fpls.2021.760002/full
work_keys_str_mv AT holgergartner cambialactivityofmoringaperegrinaforsskfioriinaridenvironments
AT emadfarahat cambialactivityofmoringaperegrinaforsskfioriinaridenvironments