New records of Ripersiella (Tinsley) (Hemiptera: Coccomorpha: Rhizoecidae) species and identification key of Rhizoecidae in Italy
AbstractBiological invasions are one of the major constraints worldwide because of the economic and environmental consequences they may pose. Root mealybugs (Hemiptera: Coccomorpha: Rhizoecidae) are continuously transported worldwide with plant soil because of their cryptic behavior. In this study it was reported the presence of Ripersiella multiporifera Jansen in Sicily for the first time and discussed the presence of R. maasbachi (Jansen) and R. hibisci (Kawai & Takagi) in Italy. A key is provided to identify the species of Rhizoecidae currently known in Italy. The species were identified by morphological features and characterized molecularly by using a partial COI mitochondrial gene. Our report alerts the presence of alien root mealybugs in Italy. R. hibisci is a quarantine species listed in Annex IIA of EU Regulation 2019/2072.
- Citations: 0
- Sep 12, 2023
Algae and cyanobacteria-based biostimulants in controlling plant-parasitic nematodes: a sustainable approach for crop protection
AbstractPlant root pathogens such as bacteria, fungi, nematodes and viruses infect over a thousand plant species worldwide, threatening the livelihood and food security of small-scale farmers and rural communities who rely on the crops. For centuries, soil fumigants have been the standard for disease infestation control; however, due to the hazardous effects of these fumigants and their overall species specificity failure, there has been a paradigm shift away from using chemicals to control plant pathogens in recent decades. The use of algae and cyanobacteria-based biostimulants in combating plant-parasitic nematodes has recently gained the attention of researchers. This review intends to elucidate the state of the art of algae and cyanobacteria-based biostimulants and their bioactive compounds in controlling plant-parasitic nematodes. In addition, given that the mechanisms of action of these biological biostimulants are not fully understood, this review has further elaborated on how these organisms and their bioactive extracts suppress and control plant pest nematodes. Finally, barriers and prospects in commercializing of algae and cyanobacteria-based biostimulants are reviewed.
- Citations: 1
- Sep 5, 2023