![]() ![]() Yet, a certain degree of host specialization exists in this pathogen ( Thompson and Latorre, 1999 Muñoz et al., 2002). Botrytis can be isolated from different plant species in nature and infection can be reproduced in the laboratory on a wide range of hosts. Additionally, it can also grow saprophytically. As a necrotroph, it can extract nutrients from dead or senescent plant material, but it can also infect living tissues via direct penetration or through natural openings or wounds ( Williamson et al., 2007). This pathogen has a wide host range and infects more than 1,000 plant species worldwide including vegetables, ornamentals, and fruits, leading to important yield and quality losses ( Elad et al., 2016). F v/F m showed a strong negative correlation with disease severity and can be an indicator for the early detection of gray mold on strawberry leaves.īotrytis cinerea Pers.:Fr the causal agent of gray mold disease is a filamentous, heterothallic fungus with a necrotrophic life style ( Alfonso et al., 2000). Furthermore, we used image analysis to quantify the virulence of the different Botrytis isolates based on changes in photosynthetic performance of the strawberry leaves: chlorophyll fluorescence (F v/F m), chlorophyll index (ChlIdx) and anthocyanin content (modified anthocyanin reflection index, mAriIdx). Blue light pretreatment resulted in decreased leaf resistance to some isolates. Red LED light improved leaf basal resistance to all the tested Botrytis isolates. The isolates differed in virulence on strawberry leaves, and this was positively correlated to oxalic acid production by B. Pathogenicity of the Botrytis isolates was studied on 2-week-old strawberry ( Fragaria × ananassa ‘Elsanta’) leaves grown under white, blue, and red LED lights. ![]() All isolates sporulated under daylight treatment, red light resulted in lower sporulation, while white, blue, and blue+red light inhibited sclerotia formation in all isolates, and sporulation in most, but not all isolates. Light quality had a limited effect on growth rate. The 15 Botrytis isolates differed in their mycelial growth rate, conidia production, and sclerotia formation. Daylight, darkness, and LED lights with different wavelengths (white, blue, red, blue+red) were chosen as treatments. cinerea isolates upon different light treatments. In this study, we investigated the phenological diversity in 15 B. The chosen light spectrum can also have an effect on the pathogens in this production system. ![]() Light emitting diodes (LEDs) with specific light spectrum are increasingly used as lighting resource for plant greenhouse production.
0 Comments
Leave a Reply. |