Plant response to salinity

Plant roots detect salt and send this information to the shoots via calcium (Ca2+) waves.

Left: Time-lapse scanning laser confocal microscope video showing a calcium wave propagating through a root. In the root, these waves move through the cortical and endodermal cell layers at speeds of up to 400 µm/s, i.e., traversing several cells per second. This Ca2+ wave system correlates with the triggering of molecular responses in distant parts of the plant upon perception of localized (salt) stress. Such propagating Ca2+ waves provide a new mechanism for the rapid integration of activities throughout the plant body (Choi et al., 2014).

Natural diversity in sensitivity to salt (NaCl)


Explore the analysis of natural variation of different varieties of Arabidopsis plants in resistance to salinity.

Note: This is important for future agro-ecosystems on Earth and Mars.

Soil salinity chemistry class for K-12 and undergraduate students

Chemistry Lesson: Salty Plants