Cloning and Expression Analysis of a B-box-type Zinc-finger Protein Gene PhBBX8 in Petunia hybrida Cloning and Expression Analysis of a B-box-type Zinc-finger Protein Gene PhBBX8 in Petunia hybrida The CONSTANS-like 4 transcription factor, AtCOL4, positively regulates abiotic stress tolerance through an abscisic acid-dependent manner in Arabidopsis Protein Sequences and Expression Profiles of 4 B-box Zinc Finger Genes and Functions of PeBZF 4 from Phyllostachys edulis