@article {47706,
	title = {Characterized constituents of insect herbivore oral secretions and their influence on the regulation of plant defenses},
	journal = {Phytochemistry},
	volume = {193},
	year = {2022},
	month = {JAN},
	pages = {113008},
	type = {Article},
	abstract = {For more than 350 million years, there have been ongoing dynamic interactions between plants and insects. In several cases, insects cause-specific feeding damage with ensuing herbivore-associated molecular patterns that invoke characteristic defense responses. During feeding on plant tissue, insects release oral secretions (OSs) containing a repertoire of molecules affecting plant defense (effectors). Some of these OS components might elicit a defense response to combat insect attacks (elicitors), while some might curb the plant defenses (suppressors). Few reports suggest that the synthesis and function of OS components might depend on the host plant and associated microorganisms. We review these intricate plant-insect interactions, during which there is a continuous exchange of molecules between plants and feeding insects along with the associated microorganisms. We further provide a list of commonly identified inducible plant produced defensive molecules released upon insect attack as well as in response to OS treatments of the plants. Thus, we describe how plants specialized and defense-related metabolism is modulated at innumerable phases by OS during plant-insect interactions. A molecular understanding of these complex interactions will provide a means to design eco-friendly crop protection strategies.},
	keywords = {Effector, Elicitor, Herbivore insects, Oral secretion, Plant defense, Suppressor},
	issn = {0031-9422},
	doi = {10.1016/j.phytochem.2021.113008},
	author = {Kallure, Gopal S. and Kumari, Archana and Shinde, Balkrishna A. and Giri, Ashok P.}
}
@article {47798,
	title = {Dietary influence on modulation of Helicoverpa armigera oral secretion composition leading to differential regulation of tomato plant defense},
	journal = {Plant Science},
	volume = {314},
	year = {2022},
	month = {JAN},
	pages = {111120},
	type = {Article},
	abstract = {Little is known about how different plant-based diets influence the insect herbivores{\textquoteright} oral secretion (OS) composition and eventually the plant defense responses. We analyzed the OS composition of the generalist Lepidopteran insect, Helicoverpa armigera feeding on the host plant tomato (OSH), non-host plant capsicum (OSNH), and artificial diet (OSAD) using Liquid Chromatography-Quadrupole Time of Flight Mass Spectrometry. Higher numbers and levels of alkaloids and terpenoids were observed in OSH and OSNH, respectively while OSAD was rich in phospholipids. Interestingly, treatment of H. armigera OSAD, OSH and OSNH on wounded tomato leaves showed differential expression of (i) genes involved in JA and SA biosynthesis and their responsive genes, and (ii) biosynthetic pathway genes of chlorogenic acid (CGA) and trehalose, which exhibited increased accumulation along with several other plant defensive metabolites. Specifically, high levels of CGA were detected after OSH and OSNH treatments in tomato leaves. There was higher expression of the genes involved in phenylpropanoid biosynthesis, which may lead to the increased accumulation of CGA and related metabolites. In the insect bioassay, CGA significantly inhibited H. armigera larval growth. Our results underline the differential accumulation of plant and insect OS metabolites and identified potential plant metabolite(s) affecting insect growth and development.},
	keywords = {Chlorogenic acid, defense, Metabolites, Non-host, Oral secretion, trehalose},
	issn = {0168-9452},
	doi = {https://doi.org/10.1016/j.plantsci.2021.111120},
	url = {https://www.sciencedirect.com/science/article/pii/S0168945221003162},
	author = {Gopal S. Kallure and Balkrishna A. Shinde and Vitthal T. Barvkar and Archana Kumari and Ashok P. Giri}
}
@article {48197,
	title = {Dietary influence on modulation of Helicoverpa armigera oral secretion composition leading to differential regulation of tomato plant defense.},
	journal = {Plant Science},
	volume = {314},
	year = {2022},
	month = {JAN},
	pages = {111120},
	type = {Article},
	abstract = {<p>
	Little is known about how different plant-based diets influence the insect herbivores{\textquoteright} oral secretion (OS) composition and eventually the plant defense responses. We analyzed the OS composition of the generalist Lepidopteran insect, Helicoverpa armigera feeding on the host plant tomato (OSH), non-host plant capsicum (OSNH), and artificial diet (OSAD) using Liquid Chromatography-Quadrupole Time of Flight Mass Spectrometry. Higher numbers and levels of alkaloids and terpenoids were observed in OSH and OSNH, respectively while OSAD was rich in phospholipids. Interestingly, treatment of H. armigera OSAD, OSH and OSNH on wounded tomato leaves showed differential expression of (i) genes involved in JA and SA biosynthesis and their responsive genes, and (ii) biosynthetic pathway genes of chlorogenic acid (CGA) and trehalose, which exhibited increased accumulation along with several other plant defensive metabolites. Specifically, high levels of CGA were detected after OSH and OSNH treatments in tomato leaves. There was higher expression of the genes involved in phenyl-propanoid biosynthesis, which may lead to the increased accumulation of CGA and related metabolites. In the insect bioassay, CGA significantly inhibited H. armigera larval growth. Our results underline the differential accumulation of plant and insect OS metabolites and identified potential plant metabolite(s) affecting insect growth and development.</p>
},
	keywords = {Chlorogenic acid, defense, Metabolites, Non-host, Oral secretion, trehalose},
	issn = {0168-9452},
	doi = {10.1016/j.plantsci.2021.111120},
	author = {Kallure, Gopal S. and Shinde, Balkrishna A. and Barvkar, Vitthal T. and Kumari, Archana and Giri, Ashok P.}
}
