Ontogenetic and trans‐generational dynamics of a vertically transmitted fungal symbiont in an annual host plant in ozone‐polluted settings

2020 ◽  
Vol 43 (10) ◽  
pp. 2540-2550
Author(s):  
Andrea C. Ueno ◽  
Pedro E. Gundel ◽  
Claudio M. Ghersa ◽  
Patricia V. Demkura ◽  
Stuart D. Card ◽  
...  
Keyword(s):  
Insects ◽  
2022 ◽  
Vol 13 (1) ◽  
pp. 67
Author(s):  
Shivaji Hausrao Thube ◽  
Thava Prakasa Pandian ◽  
Anthara Bhavishya ◽  
Merin Babu ◽  
Arulappan Josephrajkumar ◽  
...  

Xylosandrus crassiusculus (Coleoptera: Curculionidae: Scolytinae) is reported causing damage to areca palm plantations (Areca catechu L.—Arecaceae) in Karnataka (India). In particular, X. crassiusculus has been observed attacking and successfully reproducing on areca nuts; besides the new host plant record, the data provided here represent the first documented case of spermatophagy for this xyleborine beetle. All infestation symptoms of this polyphagous pest were documented and illustrated. The identity of the scolytid, besides morphologically, was confirmed by its DNA barcoding. Eggs, larvae and pupae were found within the galleries of infested kernels. All galleries of the infested kernels were characterized by the presence of whitish to greyish fungal growth. The fungus was identified as Ambrosiella roeperi, a known symbiont of Xylosandrus crassiusculus. Incidence of this symbiotic insect-fungus complex in the economic part of arecanut, i.e., the kernel, is of serious concern. In a climate change scenario, this beetle with fungal symbionts may pose a serious threat to arecanut production in India and elsewhere.


2010 ◽  
Vol 278 (1710) ◽  
pp. 1419-1426 ◽  
Author(s):  
Emmanuel Defossez ◽  
Champlain Djiéto-Lordon ◽  
Doyle McKey ◽  
Marc-André Selosse ◽  
Rumsaïs Blatrix

In ant–plant symbioses, plants provide symbiotic ants with food and specialized nesting cavities (called domatia). In many ant–plant symbioses, a fungal patch grows within each domatium. The symbiotic nature of the fungal association has been shown in the ant-plant Leonardoxa africana and its protective mutualist ant Petalomyrmex phylax . To decipher trophic fluxes among the three partners, food enriched in 13 C and 15 N was given to the ants and tracked in the different parts of the symbiosis up to 660 days later. The plant received a small, but significant, amount of nitrogen from the ants. However, the ants fed more intensively the fungus. The pattern of isotope enrichment in the system indicated an ant behaviour that functions specifically to feed the fungus. After 660 days, the introduced nitrogen was still present in the system and homogeneously distributed among ant, plant and fungal compartments, indicating efficient recycling within the symbiosis. Another experiment showed that the plant surface absorbed nutrients (in the form of simple molecules) whether or not it is coated by fungus. Our study provides arguments for a mutualistic status of the fungal associate and a framework for investigating the previously unsuspected complexity of food webs in ant–plant mutualisms.


1985 ◽  
Vol 63 (2) ◽  
pp. 252-262 ◽  
Author(s):  
C. Godbout ◽  
J. A. Fortin

The ability of Populus tremuloides Michx. to form ectomycorrhizae with identified species of fungi was investigated using a pouch technique. Twenty-nine out of 54 fungus species formed ectomycorrhizae on aspen seedlings. Aspen seems to display little specificity for ectomycorrhizal fungi. Only epidermal Hartig nets were observed in the synthesized ectomycorrhizae and periepidermal ones were frequently encountered. Structural and morphological characteristics of ectomycorrhizae are presented by genus of mycorrhizal fungi. This grouping of characters by genus seems possible independently of the host plant. The classification of ectomycorrhizae is viewed in a new way in which structural types would be taxonomically related to the genus of the fungal symbiont.


2012 ◽  
Vol 116 (2) ◽  
pp. 234-240 ◽  
Author(s):  
W.R. Simpson ◽  
J. Schmid ◽  
J. Singh ◽  
M.J. Faville ◽  
R.D. Johnson

ENTOMON ◽  
2020 ◽  
Vol 45 (3) ◽  
pp. 237-238
Author(s):  
J. Nayanathara ◽  
R. Narayana
Keyword(s):  
New Host ◽  

Anthene lycaenina lycaenina (R. Felder, 1868) is reported on mango for the first time.


2019 ◽  
Vol 16 (1) ◽  
pp. 12-15
Author(s):  
M.D. Zerova ◽  
A. Al-Sendi ◽  
V.N. Fursov ◽  
H. Adeli-Manesh ◽  
S.E. Sadeghi ◽  
...  

The new species, Bruchophagus ayadi sp.n., is reared from seed pods of Melilotus officinalis (L.) Desr. (Fabaceae) in Iran (Lorestan). The new species is close to B. platypterus (Walk.), but differs by roundish abdomen and very gibbous, almost globular (in lateral view) mesosoma. These species can be also differentiated by some biological features. The host plant of B. platypterus is Lotus corniculatus L., whereas the new species is reared from Melilotus officinalis (L.) Desr. Holotype of Bruchophagus ayadi sp.n. is deposited in the collection of I.I. Schmalhausen Institute of Zoology of National Academy of Sciences of Ukraine (Kyiv).


Sign in / Sign up

Export Citation Format

Share Document