CaARP1/CaSGT1 Module Regulates Vegetative Growth and Defense Response of Pepper Plants against .

Pepper ( L.) suffers severe quality and yield loss from oomycete diseases caused by . CaSGT1 was previously determined to positively regulate the immune response of pepper plants against , but by which mechanism remains elusive.

The CaPti1-CaERF3 module positively regulates resistance of Capsicum annuum to bacterial wilt disease by coupling enhanced immunity and dehydration tolerance.

Bacterial wilt, a severe disease involving vascular system blockade, is caused by Ralstonia solanacearum. Although both plant immunity and dehydration tolerance might contribute to disease resistance, whether and how they are related remains unclear. Herein, we showed that immunity against R.

ChiIV3 Acts as a Novel Target of WRKY40 to Mediate Pepper Immunity Against Infection.

ChiIV3, a chitinase of pepper (), stimulates cell death in pepper plants. However, there are only scarce reports on its role in resistance against bacterial wilt disease such as that caused by and their transcriptional regulation. In this study, the silencing of in pepper plants significantly reduced the resistance to .

CaWRKY22 Acts as a Positive Regulator in Pepper Response to by Constituting Networks with CaWRKY6, CaWRKY27, CaWRKY40, and CaWRKY58.

The WRKY web, which is comprised of a subset of WRKY transcription factors (TFs), plays a crucial role in the regulation of plant immunity, however, the mode of organization and operation of this network remains obscure, especially in non-model plants such as pepper (). Herein, , a member of a subgroup of IIe WRKY proteins from pepper, was functionally characterized in pepper immunity against . CaWRKY22 was found to target the nuclei, and its transcript level was significantly upregulated by inoculation (RSI) and exogenously applied salicylic acid (SA), Methyl jasmonate (MeJA), or ethephon (ETH).

Basic leucine zipper domain transcription factors: the vanguards in plant immunity.

Regulation of spatio-temporal expression patterns of stress tolerance associated plant genes is an essential component of the stress responses. Eukaryotes assign a large amount of their genome to transcription with multiple transcription factors (TFs). Often, these transcription factors fit into outsized gene groups which, in several cases, exclusively belong to plants.

Functional and Promoter Analysis of ChiIV3, a Chitinase of Pepper Plant, in Response to Phytophthora capsici Infection.

Despite the involvement of many members of the chitinase family in plant immunity, the precise functions of the majority of the members remain poorly understood. Herein, the gene in encoding a chitinase protein containing a chitin binding domain and targeting to the plasma membrane was found to be induced by inoculation (PCI) and applied chitin treatment. Besides its direct inhibitory effect on growth of (), ChiIV3 was also found by virus-induced gene silencing (VIGS) and transient overexpression (TOE) in pepper plants to act as a positive regulator of plant cell death and in triggering defense signaling and upregulation of (pathogenesis related) genes against PCI.