
@article {149371,
	title = {Sensing volatiles throughout the body: geographic- and tissue-specific olfactory receptor expression in the fig wasp.},
	journal = {Insect Sci},
	year = {2024},
	month = {2024 Aug 25},
	abstract = {<p>An essential adaptive strategy in insects is the evolution of olfactory receptors (ORs) to recognize important volatile environmental chemical cues. Our model species, Ceratosolen fusciceps, a specialist wasp pollinator of Ficus racemosa, likely possesses an OR repertoire that allows it to distinguish fig-specific volatiles in highly variable environments. Using a newly assembled genome-guided transcriptome, we annotated 63 ORs in the species and reconstructed the phylogeny of Ceratosolen ORs in conjunction with other hymenopteran species. Expression analysis showed that though ORs were mainly expressed in the female antennae, 20\% were also expressed in nonantennal tissues such as the head, thorax, abdomen, legs, wings, and ovipositor. Specific upregulated expression was observed in OR30C in the head and OR60C in the wings. We identified OR expression from all major body parts of female C. fusciceps, suggesting novel roles of ORs throughout the body. Further examination of the OR expression of C. fusciceps in widely separated geographical locations, that is, South (urban) and Northeast (rural) India, revealed distinct OR expression levels in different locations. This discrepancy likely parallels the observed variation in fig volatiles between these regions and provides new insights into the evolution of insect ORs and their expression across geographical locations and tissues.</p>
},
	issn = {1744-7917},
	doi = {10.1111/1744-7917.13441},
	author = {Krishnan, Sushma and Karpe, Snehal Dilip and Kumar, Hithesh and Nongbri, Lucy B and Venkateswaran, Vignesh and Sowdhamini, Ramanathan and Grosse-Wilde, Ewald and Hansson, Bill S and Borges, Renee M}
}
@article {28254,
	title = {Cauline domatia of the ant-plant Humboldtia brunonis (Fabaceae)},
	journal = {FLORA},
	volume = {236-237},
	year = {2017},
	month = {11/2017},
	chapter = {58-66},
	abstract = {<p>We examined the morphology of the cauline domatia of the semi-myrmecophyte Humboldtia brunonis at different stages of ontogeny. We observed that the hollow chamber in H. brunonis is spontaneously formed by the plant, and suggest this to be a collective effect of both schizogeny and lysogeny, following acropetal lignification of the pith cells as the domatium internode swells up. Unlike some other cauline domatia, there is a self-opening slit that provides access to the domatium chamber. We investigated the micro-structure of the inner wall of the domatia using scanning electron microscopy, and observed that cells that form the inner lining of the domatia cavity have canaliculated, lignified sclerenchyma with numerous plasmodesmata, as reported for the true myrmecophyte Leonardoxa africana, which could explain the observed nutrient flux from domatia-dwelling invertebrates into the host plant. We also observed fungal mycelia in ant-occupied domatia, though the role of fungi in this ant-plant system awaits further investigation.</p>
},
	doi = {10.1016/j.flora.2017.09.005},
	author = {Chanam, Joyshree and Borges, Renee M}
}
