JP2018509898A - 高いタンパク質含有量及びストレスに対する抵抗性のためのnf−yc4プロモーター中の転写リプレッサー結合部位の修飾 - Google Patents
高いタンパク質含有量及びストレスに対する抵抗性のためのnf−yc4プロモーター中の転写リプレッサー結合部位の修飾 Download PDFInfo
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Abstract
Description
RAV1(リバース)モチーフ及びERF(フォワード)モチーフ(TGTTGACT;配列番号1中の下線付き太字を参照されたい)の重複配列が欠失されているイネ(Oryza sativa)のNF−YC4遺伝子のプロモーター領域を配列番号3として示し、ここでRAV1モチーフ(リバース)を太字で、ERFモチーフ(リバース)をイタリック体太字で示す。
2つのERFモチーフ(リバース)、RAV1(リバース)及びERF(フォワード)モチーフ、及び介在配列(
ERFモチーフ(リバース)、RAV1モチーフ(フォワード)及び介在配列(
2つのRAV1モチーフ及び介在配列(
トウモロコシ(Zea mays)のNF−YC4遺伝子のプロモーター領域を配列番号20として示し、ここで2つのRAV1モチーフ(フォワード)を太字で示す。
本実施例は、35S::QQS及び35S::AtNF−YC4融合構築物の作成及び形質転換を説明する。
本実施例は、植物組成の分析を説明する。
本実施例は、酵母ツーハイブレッドアッセイを説明する。
本実施例は、二分子蛍光補完(BiFC)アッセイを説明する。
本実施例は、HIS−MBPタグ付き組換え体NF−Yの精製を説明する。
本実施例は、GSTタグ付きQQSの発現及び精製を説明する。
本実施例は、プルダウンアッセイを説明する。
本実施例は、統計的設計及び分析を説明する。
本実施例は、系統発生的推定を説明する。
本実施例は、QQS導入遺伝子が種々の種子タンパク質含有量を有するエリートダイズ系統中のタンパク質含有量及び炭水化物含有量に影響を与えることを立証する;よって、QQSの効果はダイズ系統ウイリアムズ82に限定されない。
本実施例は、QQS導入遺伝子がイネ及びトウモロコシ中のタンパク質含有量に影響を与えることを立証する。
本実施例は、QQSと相互作用する遺伝子を同定するための、アラビドプシス実生由来のcDNAライブフリーに対してつり餌としてQQSを用いる酵母ツーハイブリッドスクリーニングを説明する。
本実施例は、QQS結合のために必要なAtNF−YC4中の領域を同定するために精製組換えAtNF−YC4−GST融合タンパク質を用いるグルタチオン−S−トランスフェラーゼ(GST)プルダウンアッセイを説明する。
本実施例は、QQSが通常ヒストン折りたたみ様ドメインタンパク質に結合するかどうかを調べるための精製組換えアラビドプシス核因子YB7(AtNF−YB7)−GST融合タンパク質を用いるGSTプルダウンアッセイを説明する。
本実施例は、タバコ葉におけるQQS及びAtNF−YC4のインビボ共発現を説明する。
本実施例は、QQSとAtNF−YC4のアミノ酸73−162に類似のアミノ酸配列を有するイネ及びダイズタンパク質との相互作用を説明する。
本実施例は、アラビドプシスにおけるAtNF−YC4及びOsNF−YC4の過剰発現を説明する。
本実施例は、NF−YC4遺伝子のプロモーター領域中の同定されたリプレッサーモチーフの標的化除去を説明する。
本実施例は、転写リプレッサー結合部位を含み得る領域を同定するためのNF−YC4遺伝子のプロモーター領域のスクリーニングを説明する。
本実施例は、植物防御に関与する遺伝子の発現に対するQQSの過剰発現及び過小発現の影響を説明する。
本実施例は、NF−YC4またはQQSを過剰発現するトランスジェニックシロイヌナズナ(Arabidopsis thalian)植物ではウイルス感染が減少したことを立証する。
本実施例は、NF−YC4またはQQSを過剰発現するトランスジェニックシロイヌナズナ(Arabidopsis thalian)植物では細菌増殖が減少したことを立証する。
本実施例は、NF−YC4を過剰発現する、またはQQSを発現するトランスジェニックダイズ植物では細菌増殖が低下したことを立証する。
本実施例は、NF−YC4を過剰発現する、またはQQSを発現するトランスジェニックダイズ植物ではアブラムシが減少したことを立証する。
本実施例は、NF−YC4を過剰発現するトランスジェニックダイズ植物の種子中のタンパク質またはタンパク質+油含有量が増加したことを立証する。
本実施例は、NF−YC4を過剰発現するトランスジェニックトウモロコシ植物の種子中のタンパク質含有量が増加したことを立証する。
本実施例は、NF−YC4を過剰発現するトランスジェニックイネ植物の種子中のタンパク質含有量が増加したことを立証する。
Claims (49)
- 転写リプレッサー結合部位を含むプロモーターを含むNF−YC4遺伝子を含む真核細胞中のタンパク質含有量の増加方法であって、前記方法は転写リプレッサーがNF−YC4遺伝子の転写を防止できないように該転写リプレッサー結合部位を修飾して、前記真核細胞中のタンパク質含有量を増加させる前記方法。
- 更に、前記真核細胞由来の細胞の集まり、組織、器官または生物を作成することを含む、請求項1に記載の方法。
- 前記真核細胞は細胞の集まり、組織、器官または生物の一部である、請求項1に記載の方法。
- 前記生物は植物である、請求項2または3に記載の方法。
- 前記植物は作物である、請求項4に記載の方法。
- 前記作物はダイズ、イネまたはトウモロコシである、請求項5に記載の方法。
- 前記植物は単子葉植物である、請求項4に記載の方法。
- 前記植物は双子葉植物である、請求項4に記載の方法。
- 前記転写リプレッサー結合部位を欠失により修飾する、請求項1に記載の方法。
- 前記転写リプレッサー結合部位はERFモチーフ、RAV1モチーフ、またはERFモチーフ及びRAV1モチーフの両方を含む、請求項1、2、3または9に記載の方法。
- 前記真核細胞はイネ細胞であり、(i)2つのERFモチーフを欠失させ、(ii)RAFlモチーフを欠失させ、または(iii)RAV1モチーフ及びERFモチーフを欠失させる、請求項10に記載の方法。
- 前記真核細胞はダイズ細胞であり、(i)2つのRAV1モチーフを欠失させ、または(ii)RAV1モチーフ及びERFモチーフを欠失させる、請求項10に記載の方法。
- TALENSを用いてERFモチーフを欠失させ、RAV1モチーフを欠失させ、またはERFモチーフ及びRAV1モチーフの両方を欠失させる、請求項10に記載の方法。
- CRISPR/Cas9を用いてERFモチーフを欠失させ、RAV1モチーフを欠失させ、またはERFモチーフ及びRAV1モチーフの両方を欠失させる、請求項10に記載の方法。
- 請求項2または3に記載の方法に従って得た植物である生物を第2植物と交雑させて子孫植物を生産し、高いタンパク質含有量を有する子孫植物を選択して、高いタンパク質含有量を有する植物を生産することを含む高いタンパク質含有量を有する植物の生産方法。
- 前記転写リプレッサー結合部位はERFモチーフ、RAV1モチーフ、またはERF1モチーフ及びRAV1モチーフの両方を含む、請求項15に記載の方法。
- 前記真核細胞はイネ細胞であり、(i)2つのERFモチーフを欠失させ、(ii)RAFlモチーフを欠失させ、または(iii)RAV1モチーフ及びERFモチーフを欠失させる、請求項16に記載の方法。
- 前記真核細胞はダイズ細胞であり、(i)2つのRAV1モチーフを欠失させ、または(ii)RAV1モチーフ及びERFモチーフを欠失させる、請求項16に記載の方法。
- TALENSを用いてERFモチーフを欠失させ、RAV1モチーフを欠失させ、またはERFモチーフ及びRAV1モチーフの両方を欠失させる、請求項16に記載の方法。
- CRISPR/Cas9を用いてERFモチーフを欠失させ、RAV1モチーフを欠失させ、またはERFモチーフ及びRAV1モチーフの両方を欠失させる、請求項16に記載の方法。
- 前記方法は更に、選択した子孫植物を第2植物と交雑させて戻し交雑子孫植物を生産し、高いタンパク質含有量を有する第1戻し交雑子孫植物を選択して、選択した戻し交雑子孫植物を生産し、交雑及び選択を3回以上繰り返して、高いタンパク質含有量を有する戻し交雑子孫植物を生産することを含む、請求項15に記載の方法。
- 前記NF−YC4遺伝子が転写リプレッサーがNF−YC4の転写を防止できないように修飾されている転写リプレッサー結合部位を含むプロモーターを含む細胞、細胞の集まり、組織、器官または生物であって、NF−YC4遺伝子が修飾されていない転写リプレッサー結合部位を含むプロモーターを含む対応する細胞、細胞の集まり、組織、器官または生物と比較して高いタンパク質含有量を有する前記細胞、細胞の集まり、組織、器官または生物。
- 植物またはそのハイブリッドである、請求項22に記載の生物。
- 請求項23に記載の植物またはハイブリッドの種子。
- 転写リプレッサー結合部位を含むプロモーターを含むNF−YC4遺伝子を含む植物細胞または植物中の病原体または有害生物に対する抵抗性の増加方法であって、前記方法は転写リプレッサーがNF−YC4遺伝子の転写を防止できないように病原体または有害生物に感染するリスクがある植物細胞または植物中のNF−YC4遺伝子のプロモーター中の該転写リプレッサー結合部位を修飾して、前記植物細胞または植物中の病原体または有害生物に対する抵抗性を増加させる前記方法。
- 更に、前記植物細胞から植物を再生することを含む、請求項25に記載の方法。
- 前記方法は更に、配列番号16に記載されているアミノ酸配列を有するQua−Quine Starch(QQS)ポリペプチドをエンコードするヌクレオチド配列を含むポリヌクレオチドを植物細胞または植物に導入し、そこで発現させることを含み、前記ヌクレオチド配列はプロモーターに機能しうる形で連結されている、請求項25に記載の方法。
- 更に、前記植物細胞から植物を再生することを含む、請求項27に記載の方法。
- 前記転写リプレッサー結合部位はERFモチーフ、RAV1モチーフ、またはERFモチーフ及びRAV1モチーフの両方を含む、請求項25または27に記載の方法。
- 前記植物細胞または植物はイネ細胞またはイネ植物であり、(i)2つのERFモチーフを欠失させ、(ii)RAF1モチーフを欠失させ、または(iii)RAV1モチーフ及びERFモチーフを欠失させる、請求項29に記載の方法。
- 前記植物細胞または植物はダイズ細胞またはダイズ植物であり、(i)2つのRAV1モチーフを欠失させ、または(ii)RAV1モチーフ及びERFモチーフを欠失させる、請求項29に記載の方法。
- TALENSを用いてERFモチーフを欠失させ、RAV1モチーフを欠失させ、またはERFモチーフ及びRAV1モチーフの両方を欠失させる、請求項29に記載の方法。
- CRISPR/Cas9を用いてERFモチーフを欠失させ、RAV1モチーフを欠失させ、またはERFモチーフ及びRAV1モチーフの両方を欠失させる、請求項29に記載の方法。
- 前記病原体は細菌またはウイルスであり、前記有害生物はアブラムシである、請求項25または27に記載の方法。
- 前記植物は作物である、請求項25または27に記載の方法。
- 前記作物はダイズである、請求項35に記載の方法。
- 前記植物は双子葉植物である、請求項25または27に記載の方法。
- 請求項25、26、27または28に記載の方法に従って得た植物を第2植物と交雑させて子孫植物を生産し、病原体または有害生物に対して高い抵抗性を有する子孫植物を選択して、病原体または有害生物に対して高い抵抗性を有する植物を生産することを含む病原体または有害生物に対して高い抵抗性を有する植物の生産方法。
- 前記転写リプレッサー結合部位はERFモチーフ、RAV1モチーフ、またはERFモチーフ及びRAV1モチーフの両方を含む、請求項38に記載の方法。
- 前記植物細胞または植物はイネ細胞またはイネ植物であり、(i)2つのERFモチーフを欠失させ、(ii)RAFlモチーフを欠失させ、または(iii)RAV1モチーフ及びERFモチーフを欠失させる、請求項39に記載の方法。
- 前記植物細胞または植物はダイズ細胞またはダイズ植物であり、(i)2つのRAV1モチーフを欠失させ、または(ii)RAV1モチーフ及びERFモチーフを欠失させる、請求項39に記載の方法。
- TALENSを用いてERFモチーフを欠失させ、RAV1モチーフを欠失させ、またはERFモチーフ及びRAV1モチーフの両方を欠失させる、請求項39に記載の方法。
- CRISPR/Cas9を用いてERFモチーフを欠失させ、RAV1モチーフを欠失させ、またはERFモチーフ及びRAV1モチーフの両方を欠失させる、請求項39に記載の方法。
- 前記方法は更に、選択した子孫植物を第2植物と交雑して戻し交雑子孫植物を生産し、病原体または有害生物に対して高い抵抗性を有する第1戻し交雑子孫植物を選択して、選択した戻し交雑子孫植物を生産し、交雑及び選択を3回以上繰り返して、病原体または有害生物に対して高い抵抗性を有する戻し交雑子孫植物を生産することを含む、請求項38に記載の方法。
- NF−YC4遺伝子が転写リプレッサーがNF−YC4の転写を防止できないように修飾されている転写リプレッサー結合部位を含むプロモーターを含む植物であって、前記植物中の病原体または有害生物に対する抵抗性が高められている前記植物。
- 植物の野生型はQQSを含まず、発現せず、その中に配列番号16に記載されているアミノ酸配列を有するQQSポリペプチドをエンコードするヌクレオチド配列を含むポリヌクレオチドが導入され、そこで発現されており、前記ヌクレオチド配列はプロモーターに機能しうる形で連結されている、請求項45に記載の植物。
- 請求項45または46に記載の植物の種子。
- 請求項45または46に記載の植物のハイブリッド。
- 請求項48に記載のハイブリッド植物の種子。
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