Entries by Toluwase Olukayode

MSH1-induced heritable enhanced growth vigor through grafting is associated with the RdDM pathway in plants (Nature Comms.)

The ability of plants to adapt to diverse environments and environmental conditions has been attributed to phenotypic plasticity mediated by genetic and epigenetic changes. Through grafting experiments, small RNA has been shown to be a mobile molecule that can be transmitted long-distance via the vascular system. While several studies have demonstrated the effect of this […]

The karrikin signaling regulator SMAX1 controls Lotus japonicus root and root hair development by suppressing ethylene biosynthesis (Proc. Natl. Acad. Sci. USA)

KARRIKIN INSENSITIVE 2 (KAI2) and MORE AXILLARY GROWTH 2 (MAX2) form an important hormone receptor complex and mediate several developmental responses in the karrikin signaling pathway. The proteolytic degradation of the suppressor of MAX2 (SMAX1) is a major step in this pathway. Carbonnel et al. investigated the molecular events downstream of SMAX1 and the associated […]

Cell-cell adhesion in plant grafting is facilitated by b-1,4-glucanases (Science) ($)

Plant grafting has been used in crop improvement for centuries and more recently to study systemic and long-distance signaling in the plant vascular system. In order to better understand graft compatibility and its mechanism, Notaguchi et al. used Nicotiana to study interfamily graft combinations. Interfamily grafting between Nicotiana and Chrysanthemum morifolium (Cm, family Asteraceae) was […]

Multidimensional gene regulatory landscape of a bacterial pathogen in plants (Nature Plants)

The outcome of a plant-bacteria interaction is determined by the bacterial virulence and plant immune systems. Individually, these systems, and to an extent their interactions, have been well studied. However, certain aspects of their interactions remain elusive, particularly how plant immunity affects bacterial functions. Nobori et al. used an integrated approach of transcriptomics and proteomics […]

An aphid RNA transcript migrates systemically within plants and is a virulence factor (PNAS)

Aphids are an important insect pest that can cause significant yield loss to crops, particularly through feeding damage and as vector for devasting plant pathogens. How aphids and other sap-feeding insects use their stylet to penetrate the plant vascular tissues is well studied but the factors involved in establishing a long-term interaction between aphids and […]

SMAX1-dependent seed germination bypasses GA signalling in Arabidopsis and Striga (Nature Plants)

Strigolactones (SL) are germination cues for parasitic plants, as their seeds will not germinate until they perceive SL exuded from the host plant.  In contrast, gibberellins (GA) are the dominant germination hormone in non-parasitic plants; GA-mediated degradation of DELLA repressors permits germination.  Similarities between SL and GA signaling logic have been observed, suggesting a probable […]

Nutrient dose-responsive transcriptome changes driven by Michaelis–Menten kinetics underlie plant growth rates (PNAS)

Plants can increase their growth and biomass proportionately to an increase in nutrient dose and, conversely, their growth is limited by limiting nutrients. In this study, Swift et al. explored the molecular underpinnings of the nutrient dose-response phenomenon. The authors first show that nitrogen-dose affects the rate of transcript change genome-wide in Arabidopsis. They showed […]

CsIVP functions in vasculature development and downy mildew resistance in cucumber (PLOS Biol)

High yielding crops are often less resistant to pathogens and vice versa, suggesting that there is an underlying mechanism co-regulating development and disease resistance in plants. Yan et al. identified a transcription factor in cucumber (CsIVP) that regulates vascular development and resistance to downy mildew (caused by the oomycete pathogen Pseudoperonospora cubensis). CsIVP is highly […]

Integrated multi-omics framework of the plant response to jasmonic acid (Nature Plants)

Jasmonic acid (JA) is involved in fertility, seed emergence and defense. JA perception and signal transduction are well understood, but there is limited understanding of the JA responsive genome regulatory program since only one or a small number of components are usually studied at once. Zander et al. report a multi-omics analysis of the JA […]