JP2011201825A - ピリジルピリミジン誘導体を有効成分とする植物病害防除剤 - Google Patents
ピリジルピリミジン誘導体を有効成分とする植物病害防除剤 Download PDFInfo
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Abstract
【解決手段】 いくつかのピリジルピリミジン誘導体が、植物における病害抵抗性遺伝子であるPR-1遺伝子などの発現を誘導し、これによりアブラナ科野菜類炭疽病菌などによる植物病害に対して、優れた防除効果を発揮することを見出した。
【選択図】 なし
Description
例えば、イネにおけるPR遺伝子は、文献(Mitsuhara I, et al., Mol Genet Genomics (2008) 279:415-427)に、タバコにおけるPR遺伝子は、文献(Matsuoka M, et al., Plant Physiol. 1987 Dec;85(4):942-946)に開示されている。
遺伝子の発現量は、当業者に公知の任意の方法・手段で測定することができる。例えば、発現されたmRNA量の測定としては、DNAマイクロアレイ、オリゴヌクレオチドマイクロアレイ、ノーザンブロッティング(ノーザンハイブリダイゼーション)、インサイチューハイブリダイゼーション、RNA分解酵素プロテクションアッセイ、逆転写ポリメラーゼ連鎖反応(RT-PCR)および定量的転写ポリメラーゼ連鎖反応(QRT-PCR)などを用いることができる。一方、タンパク質量の測定としては、ウェスタンブロッティング、ELISAアッセイ、タンパク質アレイ(プロテインチップ)、免疫組織染色、二次元電気泳動、およびイーストツーハイブリッドなどを挙げることができる。
化合物処理による植物の免疫の活性化は、防御応答のマーカー遺伝子であるPR-1遺伝子とPDF1.2遺伝子の発現をモニターすることにより行った。PR-1遺伝子は植物の主たる防御応答経路であるサリチル酸シグナル伝達経路のマーカー遺伝子である。PDF1.2遺伝子は植物の防御応答経路であるジャスモン酸およびエチレンのシグナル伝達経路のマーカー遺伝子である。
PR-1(At2g14610;フォワードプライマー5’-CCCACAAGATTATCTAAGGGTTCAC-3’/配列番号:3,リバースプライマー5’-CCCTCTCGTCCCACTGCAT-3’/配列番号:4)(Jirage et al. (2001) Plant J 26: 395-407)
PDF1.2(At5g44420;フォワードプライマー5’-CCATCATCACCCTTATCTTCGC-3’/配列番号:5,リバースプライマー5’-TGTCCCACTTGGCTTCTCG-3’/配列番号:6)
その結果、7827、7827-A1、7827-A2、7827-A3、9630、9640は、防御応答遺伝子PR-1を強く発現誘導した(図1)。一方、7826、9642は防御応答遺伝子の発現誘導活性が低かった(図1)。
植物の免疫の活性化は、防御応答遺伝子の発現を測定することにより判断することができる。既に明らかになっている3つの防御シグナル伝達経路であるサリチル酸シグナル伝達経路、ジャスモン酸シグナル伝達経路およびエチレンシグナル伝達経路について検定した。マーカー遺伝子としてPR-1遺伝子に追加して、サリチル酸シグナル伝達経路のマーカー遺伝子であるPR-2遺伝子、ジャスモン酸およびエチレンシグナル伝達経路のマーカー遺伝子であるPDF1.2遺伝子とPR-3遺伝子、ジャスモン酸シグナル伝達経路のマーカー遺伝子であるVSP2遺伝子、抗菌性タンパク質をコードする防御応答遺伝子であるキチナーゼ遺伝子(At2g43570/CHI570、At2g43620/CHI620)を用いた。
PR-1(At2g14610;フォワードプライマー/配列番号:3,リバースプライマー/配列番号:4)(Jirage et al. (2001) Plant J 26: 395-407)
PDF1.2(At5g44420;フォワードプライマー/配列番号:5,リバースプライマー/配列番号:6)
キチナーゼ(At2g43570;フォワードプライマー5’-CCAAGAAACAGGGTTCATGTGT-3’/配列番号:7,リバースプライマー5’-TAGTAGCCCTTTCCTTGTGC-3’/配列番号:8)
キチナーゼ(At2g43620;フォワードプライマー5’-CTGGAAAGTTCCTCGGACTC-3’/配列番号:9,リバースプライマー5’-GGACGAACATTTAGGTTCCAG-3’/配列番号:10)
PR-3(basic endochitinase)(at3g12500;フォワードプライマー5’-GGCAAACGCTACTACGGAAG-3’/配列番号:11,リバースプライマー5’-AAGCGATCACTGCGTCGTT-3’/配列番号:12)
PR-2(at3g57260;フォワードプライマー5’-CTTCAACCACACAGCTGGA-3’/配列番号:13,リバースプライマー5’-GCATTCGCTGGATGTTTTGT-3’/配列番号:14)
VSP2(at5g24770;フォワードプライマー5’-GGATACGGAACAGAGAAGACC-3’/配列番号:15,リバースプライマー5’-GTTCAATCCCGAGCTCTATG-3’/配列番号:16)
また、植物材料として、土(ダイオ化成社製)に播種し、24時間の明暗サイクルを明時間12時間および暗時間12時間として4週間栽培したシロイヌナズナ(生態型:コロンビア)を用いた。0.01%の展着剤マイリノーを添加した50ppmの「9640」および「7827」を、上述したように培養したシロイヌナズナに対し、1鉢当り3〜5mlの噴霧または1鉢当り30mlの灌水で処理した。処理後、22℃で明時間12時間および暗時間12時間のサイクル条件下で静置した。散布2日後、人工培養したアブラナ科野菜類炭疽病菌(Colletotrichum higginsianum)胞子の懸濁液(5×105胞子/ml)を噴霧接種し、22℃、相対湿度100%の湿度に保ち感染させた。接種6日後に病徴を観察した。その結果、灌水処理では大きな防除効果は示さなかったが、両薬剤について噴霧処理において病徴の抑制が認められ、防除効果を示した(図5)。
植物材料として、直径7cmのプラスチックポット中の土(ダイオ化成社製)に播種し、24時間の明暗サイクルを明時間12時間および暗時間12時間として4週間栽培したシロイヌナズナ(生態型:コロンビア)を用いた。上述したように培養したシロイヌナズナに、予め調製した0.01%の展着剤マイリノーを添加した20ppmの各種薬剤の溶液を、1鉢当り3〜5mlの噴霧で処理した。処理後、22℃で明時間12時間および暗時間12時間のサイクル条件下で静置した。散布2日後、人工培養したアブラナ科野菜類炭疽病菌(Colletotrichum higginsianum)胞子の懸濁液(5×105胞子/ml)を噴霧接種し、22℃、相対湿度100%の湿度に保ち感染させた。接種6日後、鉢当りの罹病度を下記基準により類別評価した。結果を表2に示す。結果は1区9〜15試料の平均である。181、2219、7827、9640、7827-A1、7827-A2、7827-A3が防除効果を示し、その中でも、特に、7827、9640、7827-A1、7827-A2、7827-A3が20ppmで優れた防除効果を示した。
0:病斑を認めない.1:病斑がわずかに認められる.2:病斑が葉面積の1/4未満を占める.3:病斑が葉面積の1/4〜1/2未満を占める.4:病斑が葉面積の1/2以上を占める.5:枯死.
防除価(%)=(1-(処理区の罹病度÷無処理区の罹病度))×100
植物材料として、直径7cmのプラスチックポット中の土(ダイオ化成社製)に播種し、24時間の明暗サイクルを明時間12時間および暗時間12時間として16日間栽培したハクサイ(品種:無双)を用いた。各種薬剤を上述したように培養したハクサイに、予め調製した0.01%の展着剤マイリノーを添加した40ppmの「9640」および「7827」を、1鉢当り3〜5mlの噴霧で処理した。処理後、22℃で明時間12時間および暗時間12時間のサイクル条件下で静置した。散布1日後、人工培養したアブラナ科野菜類炭疽病菌(Colletotrichum higginsianum)胞子の懸濁液(5×105胞子/ml)を噴霧接種し、22℃、相対湿度100%の湿度に保ち感染させた。接種6日後、鉢当りの罹病度を下記基準により類別評価した。また、薬害も同時に調査した。結果を表3に示す。結果は1区3個体の平均である。「9640」および「7827」は、アブラナ科野菜類炭疽病菌に対し40ppmで優れた防除効果を示した。
0:病斑を認めない.1:病斑がわずかに認められる.2:病斑が葉面積の1/4未満を占める.3:病斑が葉面積の1/4〜1/2未満を占める.4:病斑が葉面積の1/2以上を占める.5:枯死.
防除価(%)=(1-(処理区の罹病度÷無処理区の罹病度))×100
植物材料として、直径7cmのプラスチックポット中の土(ダイオ化成社製)に播種し、24時間の明暗サイクルを明時間12時間および暗時間12時間として4週間栽培したシロイヌナズナ(生態型:コロンビア)を用いた。上述したように培養したシロイヌナズナに、予め調製した0.01%の展着剤マイリノーを添加した20ppmの各種薬剤の溶液を、1鉢当り3〜5mlの噴霧で処理した。処理後、22℃で明時間12時間および暗時間12時間のサイクル条件下で静置した。
rpoDフォワードプライマー5'-CCGAGATCAAGGACATCAAC-3'/配列番号:17
rpoDリバースプライマー5'-GAGATCACCAGACGCAAGTT-3'/配列番号:18
CBP20(At5g44200)フォワードプライマー/配列番号:1
CBP20(At5g44200)リバースプライマー/配列番号:2
植物材料として、直径7cmのプラスチックポット中の土(ダイオ化成社製)に播種し、24時間の明暗サイクルを明時間12時間および暗時間12時間として16日間栽培したハクサイ(品種:無双)を用いた。上述したように培養したハクサイに、予め調製した20ppmの「9640」および「7827」を1鉢当り3〜5mlの噴霧で処理した。処理後、22℃で明時間12時間および暗時間12時間のサイクル条件下で静置した。
0:病斑を認めない.1:病斑がわずかに認められる.2:病斑が葉面積の1/4未満を占める.3:病斑が葉面積の1/4〜1/2未満を占める.4:病斑が葉面積の1/2以上を占める.5:枯死.
防除価(%)=(1-(処理区の罹病度÷無処理区の罹病度))×100
Claims (3)
- 下記一般式[I]で示されるピリジンピリミジン誘導体またはその塩を有効成分として含有することを特徴とする、植物におけるPR-1遺伝子の発現誘導剤
- 下記一般式[I]で示されるピリジンピリミジン誘導体またはその塩を有効成分として含有することを特徴とする、植物病害の防除剤。
- 植物病害が、アブラナ科野菜類炭疽病菌またはアブラナ科黒斑細菌病菌による病害である、請求項2に記載の防除剤。
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Cited By (3)
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CN104012537A (zh) * | 2013-11-01 | 2014-09-03 | 中山大学 | 一种吡啶基嘧啶醇类化合物在植物诱导抗性中的应用 |
CN109221197A (zh) * | 2018-10-25 | 2019-01-18 | 山东农业大学 | 一种植物抗病诱抗剂及其应用 |
CN114600897A (zh) * | 2022-05-09 | 2022-06-10 | 山东蓬勃生物科技有限公司 | 2`-脱氧鸟苷、鸟苷及其组合物的制备方法与应用 |
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CN108124878B (zh) * | 2017-12-26 | 2020-10-20 | 中山大学 | 类嘧啶化合物在促进水稻体内代谢物合成及激素水平中的应用 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104012537A (zh) * | 2013-11-01 | 2014-09-03 | 中山大学 | 一种吡啶基嘧啶醇类化合物在植物诱导抗性中的应用 |
CN104012537B (zh) * | 2013-11-01 | 2016-08-17 | 中山大学 | 一种吡啶基嘧啶醇类化合物在植物诱导抗性中的应用 |
CN109221197A (zh) * | 2018-10-25 | 2019-01-18 | 山东农业大学 | 一种植物抗病诱抗剂及其应用 |
CN114600897A (zh) * | 2022-05-09 | 2022-06-10 | 山东蓬勃生物科技有限公司 | 2`-脱氧鸟苷、鸟苷及其组合物的制备方法与应用 |
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