#Question id: 10373
#Unit 6. System Physiology – Plant
The nodulation (nod) genes are classified as common nod genes or host specific nod genes. Some statements related to such classification are given below;
a) nod A is a common nod gene and nod Q is a host specific gene
b) nod B is a common nod gene and nod C is a host specific gene
c) nod C is a common nod gene and nod H is a host specific gene
d) nod H is a common nod gene and nod P is a host specific gene
Choose the correct answer from the above statements:
#Question id: 10374
#Unit 6. System Physiology – Plant
The stages in the formation of the symbiotic relationship between the nitrogen-fixing bacteria and their host, Arrange the given statements of symbiotic association in a stepwise manner;
a) Migration of the bacteria toward the roots of the host plant by a chemotactic response mediated by chemical attractants
b) NodD with the flavonoids bind with the Promoter region of highly conserved the nod box
c) These attractants activate the rhizobial NodD protein,
d) The chemical attractants especially (iso)flavonoids and betaines, secreted by the roots
e)
Binding of the activated NodD to the nod box induces transcription of the other
nod genes
#Question id: 10375
#Unit 6. System Physiology – Plant
Where the first LysM receptor kinases were identified in,
#Question id: 10376
#Unit 6. System Physiology – Plant
Symbiotic nitrogen-fixing rhizobia release nodulation (Nod) factors as signaling agents as they near the surface of a legume root. The interaction between specific nod factors and their corresponding receptors. Which of the following statements is incorrect?
#Question id: 10377
#Unit 6. System Physiology – Plant
Nod factors are recognized by the Nod factor receptor (NFR) in legumes, Upon binding to Nod factors, the NFR heterodimer initiates two main separate processes mediated by SYMRK such as;
a) A signaling pathway that facilitates the infection process itself
b) Activation of the symbiosis receptor-like kinase (SYMRK)
c) Activating an extracellular domain that includes a leucine rich repeat (LRR) region and an intracellular protein kinase domain
d) The activation of a set of genes that regulate the formation of root nodules
Which of the following are the two main separate processes of NFR heterodimer?
#Question id: 10378
#Unit 6. System Physiology – Plant
Nod factor as signaling agents binds with the nod factor receptor NFR on the basis for host–symbiont specificity, which of the following is incorrect?