Allographa effusosoredica

A team of Indian scientists has uncovered a previously unknown species of lichen, Allographa effusosoredica, from the richly biodiverse Western Ghats. This discovery offers new insights into symbiosis, evolution, and ecological resilience.

Key Details of the Discovery:

• Type of Lichen: It is a crustose lichen, characterized by its striking effuse soredia (powdery reproductive structures).
• Unique Chemical Traits: The species harbors a chemical called norstictic acid, which is considered rare compared to other morphologically similar species within the genus Allographa.
• Study Methodology: The detailed study involved morphological, chemical, and advanced molecular techniques.
• First Indian Allographa with Molecular Data: This newly discovered species is the first Allographa from India to be supported by molecular data, providing robust scientific backing for its identification.

Understanding Lichens:

• Symbiotic Organisms: Lichens are not single organisms but rather a close, intimate symbiosis between two (or sometimes more) living entities:
  • A fungus that provides structure and protection.
  • A photobiont (typically a green alga or cyanobacterium) that performs photosynthesis, capturing sunlight to produce food (carbon source for the fungus).
• Ecological Roles: Despite their often humble appearance, lichens play critical roles in various ecosystems:
  • They contribute to soil formation.
  • They serve as a food source for insects.
  • They act as nature’s bioindicators, signaling environmental health due to their sensitivity to pollution.
• Distinction from Mosses: While both moss and lichens are sometimes colloquially referred to as “non-vascular plants,” it’s important to note that only mosses are true plants. Mosses belong to a group of non-vascular plants called bryophytes. Lichens, being symbiotic associations primarily involving fungi, are distinct from plants.

(Source: PIB)