Rasiukevičiūtė Neringa, Brazaitytė Aušra, Vaštakaitė-Kairienė Viktorija, Valiuškaitė Alma
Laboratory of Plant Protection, Institute of Horticulture, Lithuanian Research Centre for Agriculture and Forestry, Kauno Street 30, LT-54333 Babtai, Lithuania.
Laboratory of Plant Physiology, Institute of Horticulture, Lithuanian Research Centre for Agriculture and Forestry, Kauno Street 30, LT-54333 Babtai, Lithuania.
Plants (Basel). 2022 Jan 5;11(1):143. doi: 10.3390/plants11010143.
The study aimed to evaluate the effect of different photon flux density (PFD) and light-emitting diodes (LED) wavelengths on strawberry growth characteristics. The growth characteristics under the blue 450 nm (B), green 530 nm (G), red 660 nm (R), far-red 735 nm (FR), and white 5700 K (W) LEDs at PFD 50, 100 and 200 μmol m s were evaluated. The effect on mycelial growth evaluated by daily measuring until five days after inoculation (DAI). The presence of conidia and size (width and length) evaluated after 5 DAI. The results showed that the highest inhibition of fungus growth was achieved after 1 DAI under B and G at 50 μmol m s PFD. Additionally, after 1-4 DAI under B at 200 μmol m s PFD. The lowest conidia width was under FR at 50 μmol m s PFD and length under FR at 100 μmol m s PFD. Various LED light wavelengths influenced differences in colonies color. In conclusion, different photosynthetic photon flux densities and wavelengths influence growth characteristics. The changes in morphological and phenotypical characteristics could be related to its ability to spread and infect plant tissues. This study's findings could potentially help to manage by LEDs in controlled environment conditions.
该研究旨在评估不同光子通量密度（PFD）和发光二极管（LED）波长对草莓生长特性的影响。评估了在光子通量密度为50、100和200 μmol m⁻² s⁻¹时，蓝色450 nm（B）、绿色530 nm（G）、红色660 nm（R）、远红光735 nm（FR）和白色5700 K（W）LED下的生长特性。通过每天测量直至接种后五天（DAI）来评估对菌丝体生长的影响。在接种后5天评估分生孢子的存在情况和大小（宽度和长度）。结果表明，在PFD为50 μmol m⁻² s⁻¹的B和G光下，接种后1天对真菌生长的抑制作用最强。此外，在PFD为200 μmol m⁻² s⁻¹的B光下，接种后1 - 4天也有较强抑制作用。分生孢子宽度在PFD为50 μmol m⁻² s⁻¹的FR光下最小，长度在PFD为100 μmol m⁻² s⁻¹的FR光下最小。不同的LED光波长影响菌落颜色的差异。总之，不同的光合光子通量密度和波长会影响生长特性。形态和表型特征的变化可能与其传播和感染植物组织的能力有关。本研究的结果可能有助于在可控环境条件下利用LED进行管理。
