The entire process of rhodopsin phosphorylation and its inactivation by arrestin is fast completed within 50ms. 

TLS Online TPP Program

#Id: 9522

#XL - R Botany

The bacterial blight pathogen of rice (Oryza sativa), Xanthomonas oryzae pv. oryzae, secretes a highly conserved sulfated peptide called Ax21, which mediates quorum sensing by controlling Xanthomonas motility, biofilm formation, and virulence.

TLS Online TPP Program

#Id: 9523

#XL - R Botany

Three major types of insect herbivores

Phloem feeders, such as aphids and whiteflies, cause little damage to the epidermis and mesophyll cells. Phloem feeders insert their narrow stylet, which is an elongated mouthpart, into the phloem sieve tubes of leaves and stems. 

TLS Online TPP Program

#Id: 9524

#XL - R Botany

The amount of direct injury to the plant is low, when these insects serve as vectors for plant viruses they can cause great damage.

TLS Online TPP Program

#Id: 9525

#XL - R Botany

Cell-content feeders, such as mites and thrips, are piercing-and-sucking insects that cause an intermediate amount of physical damage to plant cells.

TLS Online TPP Program

#Id: 9526

#XL - R Botany

Chewing insects, such as caterpillars, grasshoppers, and beetles, cause the most significant damage to plants. 

TLS Online TPP Program

#Id: 9527

#XL - R Botany

Plant viruses are biotrophs and they enters in the plants via plasmodesmata and phloem