TOR-interacting Proteins Modulate Plant Growth via Gene Expression
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Solution Overview
Problem
Current methods lack effective regulation of plant growth and development, particularly in response to environmental cues, and there is a need for technologies that can manipulate TOR gene expression to enhance crop performance.
Innovation Solution
The method involves introducing nucleic acid molecules encoding TOR proteins or their interacting proteins into plants to alter gene expression, either by over-expression or silencing, to modulate growth and development, increasing ribosome biogenesis, and modifying phenotypic traits such as cell number, seed size, and drought tolerance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If TOR gene expression is manipulated to enhance crop performance, then plant growth and development are improved, but the complexity of genetic regulation increases
Solution Approach 1:
The patent introduces TIPs (TOR-interacting proteins) as intermediary molecules that mediate between TOR signaling and downstream growth processes. These TIPs serve as molecular bridges that translate TOR kinase activity into specific developmental outcomes, simplifying the regulatory architecture by creating discrete interaction modules rather than direct complex regulation
Solution Approach 2:
The patent segments the TOR signaling pathway into distinct functional modules by identifying multiple TIPs (TIP1-TIP30) that interact with TOR at different interfaces. Each TIP represents a discrete functional unit that can be independently studied and manipulated, breaking down the complex signaling cascade into manageable segments for targeted genetic manipulation
2Manufacturing precision
If nucleic acid molecules encoding TOR or TIPs are introduced to alter gene expression, then precise regulation of growth is achieved, but the difficulty of detecting and measuring gene expression increases
Solution Approach 1:
The patent employs feedback mechanisms where TIP expression levels are monitored and used to adjust TOR activity. The interaction between TOR and TIPs creates a self-regulating system where the presence and quantity of TIPs provide natural feedback signals about the state of the signaling pathway, enabling precise regulation without requiring complex external measurement systems
3Speed
If TOR signaling is enhanced to increase ribosome biogenesis, then cell growth rate increases, but energy consumption increases
Solution Approach 1:
The patent creates dynamic regulation of TOR signaling through TIPs that can be activated or deactivated in response to cellular energy status. This dynamic control allows the system to upregulate ribosome biogenesis and cell growth when energy is abundant, while automatically downregulating these processes when energy becomes limited, optimizing the balance between growth rate and energy consumption
Data Source
AI summary
Broad experimental tools that include biochemical molecular developmental global genomics and loss and gain of function transgenic approaches have been applied to address target of rapamycin (TOR) signaling pathway in plants especially using Arabidopsis model system and Brassica napus crop Towards this objective, putative TOR interacting proteins (TIPs) have been identified and functions of these implicated in diverse developmental and biochemical processes have been investigated Functional studies including over-expression and silencing of TIPs have shown a range of phenotypes that include nutrition-use-efficiency, altered plant architecture and stress resistance in transgenic Arabidopsis and Brassica lines Some of these phenotypes are relevant to important developmental pathways implicated in canola crop yield and performance.