Ecologically driven selection of nonstructural carbohydrate storage in oak trees

2021 ◽  
Author(s):  
Morgan E. Furze ◽  
Dylan K. Wainwright ◽  
Brett A. Huggett ◽  
Thorsten Knipfer ◽  
Andrew J. McElrone ◽  
...  
Keyword(s):  
Carbohydrate Storage ◽  
Nonstructural Carbohydrate ◽  
Oak Trees ◽  
Selection Of

scholarly journals Cork Oak Endophytic Fungi as Potential Biocontrol Agents against Biscogniauxia mediterranea and Diplodia corticola

2020 ◽  
Vol 6 (4) ◽  
pp. 287
Author(s):  
Daniela Costa ◽  
Rui M. Tavares ◽  
Paula Baptista ◽  
Teresa Lino-Neto
Keyword(s):  
Fungal Endophytes ◽  
Cork Oak ◽  
In Vivo Assays ◽  
Oak Trees ◽  
Treatment Measures ◽  
Dual Plate ◽  
Antagonistic Potential ◽  
Selection Of

An increase in cork oak diseases caused by Biscogniauxia mediterranea and Diplodia corticola has been reported in the last decade. Due to the high socio-economic and ecologic importance of this plant species in the Mediterranean Basin, the search for preventive or treatment measures to control these diseases is an urgent need. Fungal endophytes were recovered from cork oak trees with different disease severity levels, using culture-dependent methods. The results showed a higher number of potential pathogens than beneficial fungi such as cork oak endophytes, even in healthy plants. The antagonist potential of a selection of eight cork oak fungal endophytes was tested against B. mediterranea and D. corticola by dual-plate assays. The tested endophytes were more efficient in inhibiting D. corticola than B. mediterranea growth, but Simplicillium aogashimaense, Fimetariella rabenhorstii, Chaetomium sp. and Alternaria alternata revealed a high potential to inhibit the growth of both. Simplicillium aogashimaense caused macroscopic and microscopic mycelial/hyphal deformations and presented promising results in controlling both phytopathogens’ growth in vitro. The evaluation of the antagonistic potential of non-volatile and volatile compounds also revealed that A. alternata compounds could be further explored for inhibiting both pathogens. These findings provide valuable knowledge that can be further explored in in vivo assays to find a suitable biocontrol agent for these cork oak diseases.

scholarly journals Whole‐tree nonstructural carbohydrate storage and seasonal dynamics in five temperate species

2018 ◽  
Vol 221 (3) ◽  
pp. 1466-1477 ◽  
Author(s):  
Morgan E. Furze ◽  
Brett A. Huggett ◽  
Donald M. Aubrecht ◽  
Claire D. Stolz ◽  
Mariah S. Carbone ◽  
...  
Keyword(s):  
Seasonal Dynamics ◽  
Temperate Species ◽  
Carbohydrate Storage ◽  
Nonstructural Carbohydrate ◽  
Whole Tree

Identifying the relevant carbohydrate storage pools available for remobilization in aspen roots

2019 ◽  
Vol 39 (7) ◽  
pp. 1109-1120 ◽  
Author(s):  
Erin Wiley ◽  
Carolyn M King ◽  
Simon M Landhäusser
Keyword(s):  
Woody Plants ◽  
Pool Size ◽  
Trembling Aspen ◽  
Storage Pool ◽  
Root Segments ◽  
Inner Bark ◽  
Carbohydrate Storage ◽  
Nonstructural Carbohydrate ◽  
Root Starch ◽  
Storage Pools

AbstractNonstructural carbohydrate (NSC) remobilization remains poorly understood in trees. In particular, it remains unclear (i) which tissues (e.g., living bark or xylem) and compounds (sugars or starch) in woody plants are the main sources of remobilized carbon, (ii) to what extent these NSC pools can be depleted and (iii) whether initial NSC mass or concentration is a better predictor of regrowth potential following disturbance. To address these questions, we collected root segments from a large mature trembling aspen stand; we then allowed them to resprout (sucker) in the dark and remobilize NSC until all sprouts had died. We found that initial starch mass, not concentration, was the best predictor of subsequent sprout mass. In total, more NSC mass (~4×) was remobilized from the living inner bark than the xylem of the roots. After resprouting, root starch was generally depleted to <0.6% w/w in both tissues. In contrast, a large portion of sugars appear unavailable for remobilization: sugar concentrations were only reduced to 12% w/w in the bark and 2% in the xylem. These findings suggest that in order to test whether plant processes like resprouting are limited by storage we need to (i) measure storage in the living bark, not just the xylem, (ii) consider storage pool size—not just concentration—and (iii) carefully determine which compounds are actually components of the storage pool.

scholarly journals Diurnal Variation in Nonstructural Carbohydrate Storage in Trees: Remobilization and Vertical Mixing

2018 ◽  
Vol 178 (4) ◽  
pp. 1602-1613 ◽  
Author(s):  
Aude Tixier ◽  
Jessica Orozco ◽  
Adele Amico Roxas ◽  
J. Mason Earles ◽  
Maciej A. Zwieniecki
Keyword(s):  
Diurnal Variation ◽  
Vertical Mixing ◽  
Carbohydrate Storage ◽  
Nonstructural Carbohydrate
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