These common features suggested that all the caf genes had related functions and define a single caffeine-responsive "tolerance" pathway.
The gene group for Al ions contained a known Al-responsive tolerance gene, AtALMT1 [ 9], the Cu ion group contained metallothionein, and the NaCl group included a number of DREB transcription factors, which have been well characterized as key transcription factors regulating NaCl tolerance.
However, introducing stress-inducible genes does not always result in a stress tolerant plant because the induction may indicate a highly responsive drought tolerance mechanism or simply a particular sensibility to drought (Price et al. 2002).
The search-based algorithm which aims to obtain optimal solutions by an autocatalytic process is incorporated into an established multi-agent system (MAS) platform, with advantages of flexible system architectures and responsive fault tolerance.
CTT1, HSP12, GPD1 and GPP2, the well-studied general stress response genes regulated by HOG pathway possess stress tolerance responsive elements in their upstream activating sequence.
This result demonstrated that CaZF was able to activate yeast stress tolerance responsive element in Hog1-independent manner by directly binding to it.
Furthermore, a GhCPK5 gene was cloned and found to be responsive to salt tolerance [ 84].
Upregulation of several NAC transcription factors in B. napus in the roots and the leaves is considered to be crucial for subsequent induction of stress responsive genes for tolerance.
In an effort to identify rice genes responsible for drought tolerance, a drought-responsive gene OsEm1 encoding a group I LEA protein, was chosen for this study.
Several drought-tolerance responsive genes (RD22, ABF4, DREB2A, RD29A, PIP1; 4 and PIP2; 6) were upregulated in transgenic Arabidopsis under drought stress.
All these studies demonstrated that multiple-gene regulation is responsive for the inhibitor tolerance in Z. mobilis involving in carbohydrate metabolism, DNA replication, recombination and repair, transcriptional regulation, and universal stress responses.
