UVB radiation induces changes in the ultra-structure of Iridaea cordata

作者：Navarro Nelso P; Mansilla Andres; Plastino Estela M^*

来源：Micron, 2010, 41(7): 899-903.

DOI：10.1016/j.micron.2010.06.004

• Ultra-structure
• UVB impact
• Iridaea
• Cell wall

Iridaea cordata cultivated in the presence of UVB radiation (UVBR) was studied using transmission electron microscopy. Apical segments were cultivated in 0.97 Wm(-2) of UVBR for 40 days, 3 ha day, and compared to a negative control (UVBR absent). UVBR caused modifications, mainly in the cortical cells, including an increased number of cell wall-producing vesicles, in addition to thicker and denser cellular walls, compared to the control. Additionally, cells were observed with an irregular contour and without defined organelles. The increase of cell-wall thickness could be interpreted as an acclimation to UVBR, which could lead to protection from this radiation.

• 出版日期2010-10