Light: An Alternative Method for Physical Control of Postharvest Rotting Caused by Fungi of Citrus Fruit

Table 4

Effects of blue light irradiation on the postharvest rotting caused by P. italicum and P. digitatum.

Citrus species	Fungi species	Treatment/intensity	Mechanism of action	References
Orange	P. digitatum	Blue light (450 nm) at quantum fluxes between 210 and 630 μmolm^−2·s^−1	Increase in scoparone at fruit flavedo	[75]
Mandarin	P. italicum	Low-intensity blue LED (465 nm) with a fluency of 8 μmol·m^−2·s^−1	Suppression of fungi spore development	[76]
Mandarin	P. digitatum and P. italicum	Blue light at 465 nm with a photon flux of 80 μmol·m^−2·s^−1	Prevention of microbial growth by increasing the phytoalexin scoparone concentration	[77]
Tangerine	P. digitatum	Exposure of fruits to 410–540 nm blue light at a fluency of 40 μmol·m^−2·s^−1	Induction in PLA2 gene expression which resulted with reduced pathogen infection	[74]
Tangerine	P. digitatum and P. italicum	Blue light at the intensity of 40 μmol·m^−2·s^−1	Induction of the octanal production and reducing the activities of P. digitatum and P. italicum	[78]